*3 ERVIN, Before HALL, Chief Judge, Judge, FABER, Circuit United States Judge District for the District Southern Virginia, West sitting by designation. by published Affirmed opinion. Judge FABER majority wrote the opinion, in which Judge HALL joined. Judge Chief ERVIN wrote a concurring dissenting opinion.
OPINION
FABER, Judge: District Ervin pleaded Charles Jones guilty to a single count of knowingly purloining an arti- cle of United States inMail viola- § tion of 18 U.S.C. and was sentenced to eleven imprisonment months’ and three unload the waited to workers where plea his Under release. supervised years’ reached Once Jones the trailer. ap- mail from right to reserved Jones agreement his truck and backed denying his ruling Estes Drive peal district building, post office ap- loading behind His direct dock suppress evidence. motion Be- completed. day were decision: for the for questions duties three presents peal post three between the declin- erred distance (1) cause the district whether short, usually finished allegedly obtained offices suppress evidence ing to p.m. 5:00 delivery duties loading service by postal from Jones (2) Amendment; the Fourth violation spring Saturdays in winter On four denying the court whether envelopes con- deposit 1992, postal service sentence, after in his reduction two-level $12,000 in *4 approximately taining a total responsibility accepted finding that he reported $5,000 in checks were currency and (3) court crime; whether and his for pouches be- registered mail missing from calculations including in its post office Timberlyne the main and tween on which occasions prior four sentence Jones was Sat- Raleigh, North Carolina. post the same from stolen had been mail occasions. on each of these urday driver any of Jones’ merit Finding no office. each time his to mail access Because convic- error, his we affirm assignments of aas was identified Jones disappeared, and sentence. tion inspectors. On postal by federal suspect on the three 20, 1992, they had done as June I success, postal Saturdays without previous A transmit- electronic a small inspectors placed Jones Ervin defendant early to First envelope Citi- addressed ter an by a Saturday driver The employed as North Carolina. Raleigh, was Bank zens for holding contract trucking firm money, checks private also contained envelope Chapel inMail given to conveyance envelope was deposit tickets. Shortly Carrboro, Carolina. North Timberlyne who Station Hill supervisor Saturday, would Jones mail. Fol- p.m. registered each day’s 4:00 before in the placed it office post main en- van to personal his procedures, drive lowing normal Leaving his Hill. Chapel for pouch reserved Estes Drive in a placed on velope was lot, Jones parking building’s rear a wire seal in the and sealed with van deposits bank haul to used tractor-trailer The number drive the number. would bearing individual оffices. the branch waybill; Drive Estes from on a mail recorded seal ar- Jones would p.m. 4:00 seal approximately At the numbered way to remove Timberlyne mail truck with the pouch. rive cut it off load- Leaving the truck office. branch by the surveillance p.m., under At 4:25 rear of in the dock, wait often would he ing Timberlyne for departed inspectors, Jones postal workers office, chatting with post the Carrboro arrived at When he Carrboro. receipts and monetary they counted while as inspector watched office, post another in mail outgoing mail day’s packaged the the trail- into outgoing mail Jones loaded would postal workers p.m., By 4:30 sacks. inside lost view then er. Jones trailer into the mail outgoing loaded the minutes; he five approximately trailer for lock. trailer to the a wire seal attached balancing the had been that he claimed later post the Carrboro would drive then Jones inspector postal A during this time. load on workers being postal office. There sup- hearing on at the who testified had to Saturdays, Jones duty in Carrboro the other that on motion stated pression himself, retrieve seal the wire release load Jones he watched three occasions office post from within outgoing mail balancing task re- Carrboro, the atmail packages vestibule, sacks and the mail load thirty seconds. only about quired trail- trailer, in the the load balance into reattaching trailer and from the Emerging From Carrboro the seal. er, and reattach truck, seal, got into office, Jones the wire Estes Drive return Jones would around, turned it § headed for Estes pleaded guflty. He then Arriving Drive. p.m., about 5:00 a motion suppress filed the envelope con- parked the truck behind loading dock. taining the tracking electronic device as evi- watched, inspectors While the got dence, he out and contending inspectоrs’ had a brief conversation with a worker stop of his issuance the search standing who was on the warrant, dock. Jones then and the van search itself all violated walked building’s across the parking back lot the Fourth Amendment. Following an evi- personal towards his inspectors van. The dentiary hearing argument, and oral the dis- nothing hands, saw in Jones’ nor did see trict denied Jones’ motion from the place him anything in the van. As Jones Reserving bench. right to appeal the away, drove They followed. trial ruling on the suppress, motion to immediately began receiving customary pleaded Jones then guilty to the indictment high-pitched beeping signal from pursuant the elec- to a plea agreement. written tronic transmitter. post From the office At sentencing, the district court found that lot, parking Jones turned right onto Estes accepted Jones had not responsibility for his Drive. Shortly thereafter, he right turned pursuant actions to section 3E1.1 of the Unit- agаin onto East Franklin Street. in- ed Sentencing Guidelines, and that *5 spectors briefly lost the sound of the trans- conduct relevant for sentencing pur- mitter when their slightly vehicle fell behind poses included the four occasions before June Upon drawing van. closer to the 20, 1992, on deposits which bank had been returned, the sound inspectors and the sig- taken from pouch mail origi- nalled stop. Jones to pulled Jones his van nating at Timberlyne Post Office. The into parking of a lot hardware store some thereupon sentenced Jones to eleven of a seven-tenths mile from the Estes Drive incarceration, months’ to be by followed a post office, and plaeed was under arrest. supervised term years. release of three inspectors The drove Jones’ van back to appeal This followed. Drive, Estes they impounded where it until a search warrant could be obtained. reg- The II pouch, istered mail containing only two of thе assignment In his first error, original three deposit envelopes placed it contends that the district court in de- by supervisor at Timberlyne, was re- clining suppress as deposit evidence the trieved from loading dock the Estes envelope containing the tracking electronic post Drive pouch office. The had been cut. device, because postal inspectors alleged- At 7:43 p.m. one inspectors of the presented ly envelope obtained the from him in viola- an affidavit day’s events to a North tion of the Fourth Amendment. Specifically, Superior Carolina judge, Court who immedi- (1) argues he that the inspectors’ use ately caused a search warrant to issue per- of an tracking electronic device to monitor mitting by to seize June the contents of his van constituted a search 1992, “registered mail belonging to the U.S. by (2) forbidden Amendment; the Fourth [Sjervice Postal addressed to First Citizens stop of his van was undertaken Bank Raleigh, Carolina, North an elec- probable cause, without rendering it a sei- tronic device[,j transmitting and U.S. Cur- zure in violation of Amendment; the Fourth rency and checks.” p.m. At 8:30 the inspec- (3) inspectors obtained the tors executed the search They warrant. search warrant on prob- insufficient indicia of found envelope containing the transmit- (4) cause; able that the search executed ter beneath the driver’s seat of Jones’ van. by inspectors pursuant to the warrant scope exceeded the warrant, B therefore constituted a generalized search 29, 1992, On June by proscribed indicted Amendment. We grand jury in the Middle District of North seriatim, address these contentions reviewing single Carolina on a alleging count theft the district court’s conclusions of law with United Mail States in violation of 18 respect U.S.C. to them de novo. See away rural nearly 100 miles cabin (4th Cir.), Knotts’ cert. 868, 873 Rusher, 966 F.2d kept track police a time — For Wisconsin. -, 113 S.Ct. denied, U.S. surveillance visual both the container (1992). dur- signals, but monitoring the device’s sur- journey visual part ing latter
A of Petchsen’s because was curtailed veillance signal from maneuvers. driving evasive approximately lost beeper was protects The Fourth now-stationary hour later An same time. their be secure people “right of the A Knotts’ cabin. signal was detected effects, against houses, papers, persons, days three obtained after U.S. and seizures.” searches unreasonable Conclud- surveillance. visual intermittent Const, capacity individual’s An IV. amend. no con- raises enhancement ing scientific Amend the Fourth protection claim surveillance visual issues stitutional right property upon depends not ment held raise, Supreme Court not also would per upon whether place, but invaded a ‘search’ monitoring “neither privacy expectation legitimate ahas son contemplation within thе nor a ‘seizure’ v. United Katz place. See invaded the surveil- because Amendment” the Fourth 507, 512, States, U.S. expecta- any legitimate not “invade lance did (1967). Amend The Fourth 19 L.Ed.2d Id. at privacy.”. tion of this protects ment certiorari granted Court Supreme It has intrusion. government against privacy 705, 104 Karo, in United pro security long established been (1984), to answer 82 L.Ed.2d un against by the Fourth vided in Knotts: unresolved” “left solely applies *6 seizure and beeper falls with- a monitoring of “[W]hether v. Burdeau intrusions. government to Amendment the Fourth of in the ambit 574, 465, 475, 41 S.Ct. McDowell, 256 U.S. not that could information it reveals (1921); United 576, L.Ed. 1048 surveillance.” visual through obtained been 1652, 113, Jacobsen, 466 U.S. After at 3299. (1984). no is there If L.Ed.2d agent Administration Drug Enforcement a intrusion, Amend the Fourth government gallons fifty ordered that Karo learned implicated. not is ment extracting cocaine in ether, used to be the imported into clothing from obtained officials States, law enforcement turn to background, we this brief With authorizing the installation order appeal: wheth- by this presented initial issue tracking device monitoring an electronic an electronic use of inspectors’ er agents The ether. the cans of one contents monitor device tracking from ether can of retrieve Karo watched forbidden a search constituted van house, Karo to followed supplier, now, this cir- Until Fourth Amendment. beeper by using determined to confront occasion not had cuit has Subsequently, house. was inside ether such devices problems Fourth deter- agents beeper, the of the use through therefore, di- derives analysis, present. Our moved had been the ether mined rulings two Court’s Supreme rectly from houses, to a and then other two succession subject. this Finally, one facility. storage commercial ether moved codefendants Knotts, Karo’s In United rented a house facility to storage (1983), an second 103 moni- beeper Using the codefendants. other inside рlaced was tracking device electronic determined authorities tor, enforcement law sold chloroform five-gallon container monitoring device containing the can to one company Minneapolis chemical by a a warrant house, and obtained inside the Armstrong. Arm- defendants, Tristón on informa- in part based the house to search codefendant container to strong delivered The beeper. of the through use it to tion derived Petschen, turn delivered Darryl who Supreme Court noted that it would be an than usual balance the load in trailer unreasonable search to surreptitiously enter at the Carrboro Post Office. Absent a residence without a verify revelations device, tracking they sim- there, the container was and then continued: ply way had no knowing that the transmit- purposes For Amendment, ter, the [Fourth] and the pouch stolen mail in which it was where, the result is the concealed, same without a might be inside Jones’ van. Ad- warrant, the Government surreptitiously missibility of the evidence which seized employs electronic device to obtain in- from Jones’ van and which convicted him of formation it could not have obtained the crime charged, therefore, turns squarely
by observation from
curtilage
outside the
on the issue of
propriety
of the house.
beeper
agent
tells the
inspectors’ use of the
tracking
electronic
de-
particular
that a
actually
is
article
located
vice.
particular
at a
private
time in resi-
dence and
possession
is in the
per-
We
it
mistake,
believe would be a
persons
son or
whose residence
being
and a misreading
Supreme
Court’s
watched.
if
Even
visual surveillance has
guidance
Karo,
Knotts
to analyze this
revealed that the article to which
beep-
question solely in terms
privacy
of Jones’
er is
house,
attached has entered the
expectation in thе interior of his
van.
own
monitoring
later
only
not
verifies the offi-
agree
While we
that Jones had a reasonable
cers’ observations but also establishes that
expectation of privacy in the interior of his
the article remains on
premises.
van, we find
government
intrusion there.
Id.
1313
627
2748,
2737,
49 L.Ed.2d
480,
S.Ct.
96
a motor
of
seizure
necessary for the
quantum
485,
476,
Texas,
U.S.
379
(1976);
v.
excep-
the automobile
Stanford
fall within
to
vehicle
(1965).
511-12,
431
506,
L.Ed.2d
13
to
order
In
requirement.
the warrant
tion to
in this ease
issue
at
warrant
search
The
cause,
presented
facts
probable
establish
“registered mail
of:
the seizure
authorized
[per-
a
only “warrant
need
magistrate
to
ad
Postal Service
U.S.
belonging
that
in the belief’
caution
of
son]
Raleigh,
of
Bank
First Citizens
to
dressed
bewill
crime
of a
or evidence
contraband
transmitting
Carolina, an electronic
North
v.
Texas
searched.
to be
place
in the
found
payable
Currency
checks
1535,
and U.S.
device
103
Brown,
U.S.
460
The
Service.”
Postal
or U.S.
to Postmaster
opin-
(1983) (plurality
502
1543, 75 L.Ed.2d
inspectors’
executing
confines
not warrant
“does
standard
ion).
cause
probable
The
to
allowing them
seize
be
discretion
a belief
showing
such
that
demand
Thus, the
crime.
particular
aof
evidence
than false.”
likely true
or more
correct
seized with
to be
the items
describes
warrant
Court,
Supreme
decisions
satisfy the Fourth
particularity
sufficient
efforts, con
recent
more
own
as
well
our
as
Fawole,
v.
States
See United
Amendment.
is
“[g]reat deference
sistently establish
Cir.1986);
(4th
United
1141, 1144
785 F.2d
assessment
magistrate’s
a
given
to be
(4th
Cir.
136
Ladd,
F.2d
v.
States
proba
making a determination
facts when
1983).
Williams, 974
v.
United
ble cause.”
however,
if the
contends,
that even
Cir.1992).
v.
Spinelli
(4th
See
480, 481
F.2d
one,
as
search
general
not a
warrant
410, 419, 89 S.Ct.
States,
U.S.
be-
general search
a
constituted
executed
(1969); United
590-91, 21 L.Ed.2d
items
irrelevant
many insignificant,
cause
139, 142
Blackwood,
F.2d
in-
postal
*10
seized.”
things to be
war-
a search
issued
magistrate
weapons,
prohibits
thus
IV. The
Hor-
to search
authorizing the officer
See,
rant
searches.
general
general warrants
rob-
of the
proceeds
only for
home
ton’s
Maryland,
v.
e.g., Andresen
bery and not the weapons. Upon execution Id. at 247 (citing United States
Shilling,
warrant,
of the search
proceeds
of the
Cir.1987)).
F.2d 1365
Admittedly,
robbery were not
However,
found.
the offi-
an exception
general
to this
rule
exists
cer executing the warrant did locate the rob-
extreme circumstances. The exclusion of ev-
weapons
ber’s
plain
view and seized them.
properly
idence
pursuant
seized
to a valid
Id. at
1315
two-level
him the
crime, it denied
his
for
III
ground that
sought on
he
reduction
remain
two
now address
We
of
3E1.1
timely. Section
not
acceptance
at
error,
of which
both
of
assignments
ing
of
acceptance
governs
which
guidelines,
The stan
his sentence.
of
legality
tack the
defendant
“If
states:
responsibility,
sentencing
aof
appeal
on
review
of
dard
responsi-
of
acceptance
clearly demonstrates
Sen
States
the United
of
application
judge’s
offense
offense,
decrease
bility for his
pre
issues
on the
depends
Guidelines
tencing
Appli-
§ 3E1.1.
U.S.S.G.
by 2 levels.”
level
turns
issue
If the
appellant.
by the
sented
sec-
1(h)
сommentary to
of
Note
cation
determination,
ap
we
a factual
on
primarily
determining wheth-
that, in
states
3E1.1
tion
See
standard.
“clearly erroneous”
ply
downward
for this
qualifies
the defendant
er
City, 470 U.S.
Bessemer
City
v.
Anderson
of
consider,
may
district court
adjustment,
1511-13, 84
573-76, 105
S.Ct.
the defendant’s
alia,
of
timeliness
“the
inter
issue,
on
(1985).
If 518
L.Ed.2d
re-
acceptance of
manifesting the
in
conduct
in
legal
on the
hand,
primarily
turns
other
application
§ 3E1.1
U.S.S.G.
sponsibility.”
term, the standard
guideline
a
terpretation of
1(h).
note
ques
Mixed
novo review.
to de
closer
moves
aon
reviewed
are
and fact
of law
tions
Ap
of
the Court
agree with
We
upon whether
scale, depending
sliding
“[o]n
that
Circuit
the Tenth
for
peals
na
legal in
essentially factual
are
issues
has
timeliness,
court
district
issue
s
See
standard.
deference
due
under
ture
v.
State
United
discretion.”
substantial
F.2d
874
Daughtrey,
v.
States
United
(10th Cir.), cert.
1456, 1461
F.2d
906
Trujillo,
Cir.1989).
(4th
217
396, 112
denied, 498 U.S.
Indeed,
Application
(1990).
as
L.Ed.2d
adds,
sentenc
“[t]he
A
3E1.1
to section
5Note
a
evaluate
position to
unique
a
judge is in
ing
district
that
First,
contends
Jones
responsibility.
acceptance
defendant’s
accepted
he had
finding that
erred
court
reason,
determination
For this
denying
crime, but then
for his
responsibility
great
defer
judge
entitled
sentencing
level.
his offense
reduction
a two-level
him
applica
§ 3E1.1
U.S.S.G.
on review.”
ence
ac
respect to
defendant’s
law with
record
review of
5. Our careful
tion note
sentencing pur
for
responsibility
ceptance
court
the district
indicates
case
in this
The de
circuit.
in this
is well-settled
poses
arriving at its decision
pains
great
took
pre
by a
proving
burden
has the
fendant
an offense-
entitled
not
that Jones
factors
mitigating
the evidence
ponderance
responsibili
acceptance
for
reduction
level
sentencing
his ultimate
lower
that would
did
finding
Jones
factual
court’s
ty. The
Urrego-Linares,
v.
States
range. United
crime
for
responsibility
аccept
(4th Cir.),
de
cert.
1234, 1238-39
F.2d
3E1.1
section
contemplated
timely fashion
346, 107
nied, 493 U.S.
finding
only the
if
appeal
on
reversed
can be
has
(1989).
defendant
observe
we
Because
clearly erroneous.
by preponderance
establishing
burden
disturb
here,
decline
we
error
no clear
mitigat
applicability
the evidence
two-
deny Jones
decision
court’s
district
case,
he
ing factor
pur
—in
for
level
his offense
reduction
level
con
his criminal
for
responsibility
accepted
sentencing.
poses
Harris,
F.2d
United
duct.
F.2d
Cir.1989);
(4th
Urrego-Linares,
B
this
met
has
Whether
at 1238-39.
issue,
district
factual
is a
burden
district
Second, Jones contends
unless
disturbed
not be
will
decision
in its calculation
including
court
White,
erroneous.
clearly
occasions
prior
four
his sentence
Cir.1989).
427, 431
F.2d
had vanished
envelopes
deposit
mail
Office’s
Post
Timberlyne
found
the district
Although
pouch.
responsibility
accepted
ultimately had
*12
Section 1B1.3 of the sentencing
objections are meritless.
It
well-estab-
guidelines permits district courts to take
lished that circumstantial evidence alone can
“relevant conduct” into account in determin
be
support
sufficient to
proof,
burden of
ing a defendant’s sentence under
guide
where,
even
inas
a matter of substantive
lines. As the commentary to this section
criminal
liability,
prosecution’s
proof
explains, the “principles and limits of sen must
beyond
See,
reasonable doubt.
tencing accountability”
always
are not
e.g., Nye &
States,
Nissen v. United
same as those of
liability.
criminal
U.S.S.G. 613, 619,
766,
broken the
seal
the trailer at Carrboro on
dates;
(5)
relevant
that Jones regu-
larly had
Timberlyne
seen
ERVIN,
workers
Judge,
Chief
concurring
part
counting money priоr to
dispatch,
its
and dissenting
part:
often asked how much cash was in
ship-
I am agreement
my
with
colleagues on
ment.
most of the issues in this case as well as with
objects
to the district court’s
the ultimate decision to affirm
judgment
use of this evidence to establish his accounta
of the district court.
bility for the four previous thefts on the
grounds that
the evidence is
Believing, however,
both circum
inspec-
stantial and constitutes
hearsay
inadmissible
tors’ use of electronic tracking devices to
within
purview
of the Federal Rules of monitor the
interior of Jones’
an area in
Evidence. See
801(c).
Fed.R.Evid.
These which he retained a
analysis in
the Court’s
I believe
in violation
a search
privacy,1
*13
equivalence
upon an assumed
rests
Knotts
dissent
Amendment,
respectfully
I
Fourth
and “scientific
“visual surveillance”
between
opinion.
majority
of the
Part IIA2
from
from
surveillance
Visual
enhancement.”
two
the
in detail
address
My brethren
route,
ad-
Petsehen’s
alоng
places
public
discussing
Court
Supreme
the
of
decisions
suf-
would have
premises,
joining Knotts’
Knotts, 460
problem,
this
his
reveal both
suggests,
ficed,
to
the Court
1081, 75 L.Ed.2d
U.S.
cabin to
Knotts’
of
and the location
progress
Karo,
U.S.
(1983),
and United
1086.
at
police.
Id. at
the
(1984),so
705, 104 S.Ct.
Amendment,” howev-
“Nothing in the Fourth
duplicating
by my
to be served
is
purpose
no
augmenting
police from
er,
the
“prohibited
two
in those
the facts
their summaries
at
upon them
bestowed
sensory faculties
the
cases.
as science
such enhancement
with
birth
that
holding
of its
way
explanation
By
this case.”
them in
technology afforded
a
constitute
did not
Knotts
monitoring in
con-
Karo,
majority
as the
deciding
no
was
there
because
seizure
or a
search
monitoring of
that
cedes,
held
the Court
priva-
legitimate
invasion
Fourth
the ambit
within
beeper falls
said:
cy, the Court
informa-
“critical
it reveals
when
on
automobile
in an
traveling
person
A
that
premises”
the interior
about
tion
ex-
no reasonable
has
thoroughfares
public
through visual
obtained
have been
not
could
from
his
in movements
privacy
pectation
at
104 S.Ct.
at
U.S.
surveillance.”
Petschen
another. When
to
place
one
house
inside the
beeper was
That
3303.
he volun-
streets
public
over
traveled
visually verified
have been
not
Karo
could
to
wanted
anyone
to
who
tarily conveyed
monitor.
without
over
traveling
he was
fact
look
neither
majority that
agree
I
with
direction,
particular
ain
roads
particular
pre-
resolves
Karo
nor
Knotts
made, and
he
stops
whatever
fact of
chal-
Jones’
sented
he
when
destination
final
his
fact of
However, I am convinced
case.
lenge in this
prop-
private
roads onto
public
from
exited
closely akin
is more
case
this
on balance
erty.
Knotts,
because
than to
Karo
to
in-
beeper in
using the
were
inspectors
possibly
they could not
see
case to
what
stant
of the
failure
Admittedly, because
The in-
its assistance.
without
have seen
surveillance,
enabled
beeper
accompany-
visual
the affidavit
admitted
spectors
case to
this
officials
enforcement
law
for the search
application
ing their
place of
resting
ultimate
ascertain
to trace
not
being used
beeper
been
not have
they would
van,
chloroform
instead
but
the movements
solely
their
on
they
had
relied
so
to do
able
ascertain
van and
interior
enhancement
eyes. But scientific
naked
drove
as he
followed
contents.
its
issues
constitutional
raises
sort
this
deter-
it was
post office
away from
also
would
surveillance
visual
trans-
device
the electronic
mined that
at a
vehicle,
following Petschen
car
police
A
(emphasis
raise.
signal
mitting a
from
could
journey
throughout
the dis-
hearing
distance
added).
suppression
At the
ar-
highway and
leaving the
him
inspectors
observed
а fact that
found as
trict
respondent,
owned
riving
the cabin
con-
the van’s
ascertain
beeper to
used
in the
still
of chloroform
the drum
recognized
they
with
up what
“They picked
tents:
car.
had been
the device
signal
awas
to be-
reason
(which) gave them
1085, using . v.
281-82,
in his
may have been
package
lieve that
assump-
upon that
was tried
the case
govern-
and that
important to remember
1. It
that Jones
tion.
conceded
case
instant
ment
van,
privacy in his
expectation of
car.”
employed
beeper
limited
structures or effects qualifying as
not to enhance their visual ability
private
residences.
follow
but
used it to
instead
determine
majority
relies on some
cases
whether a deposit envelope was inside the
circuits,
several of our sister
but I will not
tracking
vehicle. Electronic
augment
vi
distinguish them,
discuss or
light
my
sual surveillance would
permissi
have been
colleagues’ forthright admissions that
their
Knotts;
ble
Karo,
under
hand,
the other
factual situations are somewhat different
makes clear
technology
cannot be used
*14
(from
case)
our
and
they
predate
that
all
powers
transmute the
eye
human
Karo. I would
suggest,
also
in this connec-
into
x-ray
those of an
microscope.
Karo,
See
tion, that their reliance on a concurring opin-
714-15,
The Court
best.
in Karo
at
point
did
one
charac-
terize the
presented in terms of
I
am
with
accord
Justice White’s asser-
“whether the monitoring of
beeper
in a
tion
requiring
a warrant will have the
private residence, a
open
location not
to visu-
salutary effect of ensuring that use
beep-
surveillance,”
al
Karo,
is a search.
abused,
ers is not
by imposing upon agents
at
at
3303. As has been
requirement
demonstrate in
out,
pointed
however,
opinion
opened
justification
advance their
for the desirеd
with a broader
statement of the issue:
search. 468
at
possession private subject protection.” Karo, U.S. at (Stevens, S.Ct. at 3311 J., joined by Brennan Marshall, J.J., con- curring in part and dissenting in part2. view,
my the touchstone principle of Karo— that an electronic tracking may device not be used to enable law agents enforcement
learn
exposed
facts not
public
view—is not
Stevens,
Brennan,
Justice
Justice
Karo,
and Justice
has
occurred.
468 U.S. at
Marshall concurred in Part III
major-
of the Karo
(Stevens, J.,
joined
by Brennan and Mar-
ity’s opinion, which
beeper
concluded that when
shall, J.J., concurring
part
and dissenting in
surveillance reveals the
property
location of
part);
713-18,
see also id. at
