Opinion for the Court filed by Chief Judge BAZELON.
Appellants were convicted by a jury of transporting, receiving, and possessing firearms in violation of various federal and District of Columbia statutes. They appeal, contending that certain evidence obtained through a warrantless search of a suitcase should have been suppressed. We agree that this evidence was improperly obtained, and we conclude that the district court’s failure to exclude it requires that these convictions be reversed.
I.
The relevant facts of this case are relatively simple and are not in dispute.
At approximately 10:00 a.m. on July 10, 1975, a special agent in the Cleveland, Ohio, office of the Bureau of Alcohol, Tobacco, and Firearms (ATF) received an anonymous tip that a machine gun had been shipped from Cleveland to Washington, D.C., where it was to be used in the planned escape of Terry Trice, an accused bank robber. The caller identified the gun’s shipper as Judy Martin, and said that Martin had placed the disassembled weapon in a brown suitcase and had sent it to Washington via Greyhound Bus on July 7. The caller said that the gun would be picked up in Washington by a man named Jerry.
The agent called the Cleveland office of the FBI to seek information about Trice. He was informed that Trice was, indeed, being held in the Cleveland Jail, that he was wanted for bank robbery in Washington, and that he would shortly be transferred there. At approximately 2:00 p.m. the agent called the Washington area office of ATF to relay the information that he *675 had obtained from the anonymous caller and from the FBI.
Shortly after this call was received, two ATF agents went to the Greyhound Bus terminal in downtown Washington, arriving some time between 2:30 and 3:00 p.m. Accompanied by a Greyhound employee, the two agents entered the baggage area of the terminal and began searching for a suitcase fitting the description they had been given. One of the agents noticed that the baggage claim check attached to a brown suitcase bore the printed inscription “Cleveland;” thinking that this indicated that the suitcase had been shipped from Cleveland 1 the agent removed this suitcase from the baggage rack and placed it on a table.
The Greyhound employee noticed a bulge in the side of the suitcase; she felt the bulge, and said, “This is the nozzle [sic ] of a gun.” Both agents then felt the sides of the suitcase (which was made of a soft tweed fabric), and concluded that the bulge was caused by the barrel of a firearm; one of the agents, who had received instruction in firearms identification, concluded that this firearm was probably an automatic or semi-automatic rifle. The agents asked the terminal manager whether he could determine the suitcase’s point of origin from the claim check number; the manager checked the number and informed the agents that the case had been shipped from Cleveland.
Some time thereafter, 2 the agents, who had by then been joined by two additional agents, forced the lock on the suitcase and opened it. Prior to opening the suitcase, the agents had made no attempt to obtain a search warrant. Between the time they examined the outside of the suitcase and the time they opened it, the agents had been in contact with their office and with an Assistant United States Attorney; they had not, however, sought any advice on the necessity of obtaining a warrant.
Inside the suitcase the agents observed an M-16 machine gun, broken down into two pieces, a snub-nose .38 caliber revolver, and some clothing. The agents closed the suitcase, without having removed any of these items, and returned the suitcase to its original location on the baggage rack.
The agents then donned Greyhound uniforms and assumed the roles of Greyhound personnel, so that they could maintain surveillance of the suitcase and the baggage area. At approximately 10:00 a.m. on the following morning, July 11, the agents observed Jerome Jones, accompanied by Til-man Powell, arrive at the baggage area, claim the suitcase in question, and leave the terminal. Both men were arrested shortly after leaving the terminal. 3
Martin, Jones, and Powell were charged in an eighteen count indictment with violations of federal and District of Columbia firearms statutes. 4 Prior to trial the three *676 defendants moved to suppress all evidence obtained as a result of the warrantless search of the suitcase. These motions were denied after a hearing. At trial, following the presentation of evidence, the court granted Powell’s motion for a judgment of acquittal. Martin and Jones were each convicted on a number of counts. 5
II.
Although appellants argued below that the agents lacked probable cause at the time they opened the suitcase, they do not pursue this argument on appeal. Consequently, the only issue before us is whether the agents’ failure to secure a search warrant renders the search improper and requires that its fruits be suppressed. 6 The government contends that a warrant was not required here, because of the presence of certain “exigent circumstances.”
It is “the most basic constitutional rule in this area” that warrantless searches are “per se unreasonable under the Fourth Amendment — subject only to a few specially established and well-delineated exceptions.”
Coolidge v. New Hampshire,
As this court has recently observed, “[t]he very term ‘exigency’ commands that analysis be shaped by the realities of the situation presented by the record.” 8 And in the present case, the record simply does not reveal a situation of unusual urgency. On the contrary, the record makes clear that the agents here had ample opportunity to secure a warrant; and the “realities of the situation” were such that a warrant could have been obtained without imperiling either the safety of those involved, or the investigation itself. Four agents were present in the Greyhound terminal both before and after the suitcase was searched; one of those agents could clearly have gone to get a warrant, while the other three maintained the surveillance of the baggage area.
The government’s arguments to the contrary are not persuasive. The government seeks first to rely upon our recent decision in
Robinson, supra,
where we upheld a warrantless search of a getaway car used in an armed bank robbery committed approximately one hour before the search. In
Robinson,
however, there was a reasonable likelihood that “[a]n immediate search of the car could well produce the information needed to speedily apprehend the culprits.”
The government next argues that because the object
searched
— i.e., a suitcase— was inherently mobile, this search may be justified by analogy to the so-called “automobile exception” to the warrant requirement.
See, e. g., Carroll v. United States,
The extent to which an object that the police wish to search is movable may well be relevant in determining whether sufficient “exigency” is present to justify an immediate, warrantless search. However, just as the word “automobile” is not
*678
“a talisman in whose presence the Fourth Amendment fades away,”
11
the inherent mobility of the object to be searched cannot, without more, justify a failure to secure a warrant. The question in each case is not simply whether the item searched is movable; rather, the question is whether, in light of the “realities of the situation,” there was a reasonable likelihood that the item
would be moved
before a warrant could be obtained. Where the possibility of movement is only remote or speculative, the police are simply not confronted with the kind of urgency which would excuse them from the warrant requirement.
See Coolidge, supra,
at 461, n. 18,
*679 Here, with four agents guarding the terminal baggage area, there was obviously little likelihood that the suitcase could have been moved without the agents’ being aware of it. While Jones might conceivably have slipped past both the Greyhound employees and the agents, located the suitcase, and removed it without arousing any notice, “[w]e attach no constitutional significance to this sort of mobility.” Id.
In fact, as we have noted, supra, the agents here did not want to prevent Jones from moving the suitcase, since it was only by allowing him to claim and remove the suitcase that they could learn his identity, and arrest him. Consequently, as long as the agents were able to keep the baggage area under surveillance, it is hard to see why the suitcase’s inherent mobility should have posed any sort of “exigency” at all. 13
Finally, the government argues that because the item being sought (í.
e.,
a machine gun) was dangerous contraband, no search warrant was required. This broad proposition is clearly insupportable. First, the distinction between contraband, instrumentalities, and fruits of crime on the one hand, and “mere evidence” on the other, is no longer relevant to Fourth Amendment determinations.
See Warden v. Hayden,
III.
We thus conclude that there were no “exigent circumstances” present here that justified the agents’ failure to obtain a search warrant. The search was therefore improper, and its fruits should have been suppressed. The district court’s failure to do so requires that these convictions be reversed. 16 The case is remanded to the *681 district court so that it may determine on which counts of the indictment, if any, there is sufficient evidence remaining to support convictions of either or both appellants. As to those counts, new trials would be required; as to all other counts, the charges must be dismissed.
So ordered.
Notes
. The reference to Cleveland indicated only that the tag had been printed in Cleveland; a suitcase’s point of origin was indicated on the claim tag by a number code.
. One agent testified at the suppression hearing that they opened the suitcase approximately fifteen minutes after completing their investigation of its exterior, tr. at 36; another agent testified that “an hour or a little more” had elapsed, tr. at 113.
. Appellant Martin was arrested later that day. Four ATF agents, who had been told to watch for a U-Haul truck bearing Ohio license 9F-701, spotted the truck in Rockville, Maryland, and followed it to a parking lot in downtown Washington. Martin, who was a passenger in the truck, was arrested, and a loaded .22 caliber pistol was recovered from her coat pocket. A search warrant was thereafter obtained for the truck, and during the search the agents found and seized a loaded .455 caliber Smith and Wesson pistol wrapped in a pillowcase.
. Of the eighteen counts, the first ten charged appellant Martin, counts eleven through sixteen charged appellant Jones, and the last two charged Tilman L. Powell, who was acquitted. Specifically, the indictment charged appellant Martin as follows:
Count One —transportation of an M-16 machine gun in interstate commerce (18 U.S.C. § 922(a)(4), 924);
Count Two —transportation of an M-16 machine gun in interstate commerce which had not been properly registered (26 U.S.C. § 586 l(j), 5871);
Count Three —transfer of an M-16 machine gun (26 U.S.C. § 5861(e), 5871);
Count Four —possession of an M-16 machine gun which had not been registered (26 U.S.C. § 5861(d), 5871);
*676 count Five —transportation of an M-16 machine gun in interstate commerce after a felony conviction (18 U.S.C. § 922(g), 924);
Count Six —transportation of a .38 caliber revolver in interstate commerce after a felony conviction (18 U.S.C. § 922(g) 924);
Count Seven —transportation of a .22 magnum caliber Derringer pistol in interstate commerce after a felony conviction (18 U.S.C. § 922(g), 924);
Count Eight —transportation of a .455 caliber revolver in interstate commerce after a felony conviction (18 U.S.C. § 922(g), 924);
Count Nine —transportation of a .455 caliber revolver in interstate commerce knowing it to be stolen (18 U.S.C. § 922(i), 924); and
Count Ten —carrying a pistol without a license (22 D.C.Code § 3204).
Appellant Jones was charged as follows:
Count Eleven —receiving and possession of an M-16 machine gun which had not been transferred according to law (26 U.S.C. § 5861(b), 5871);
Count Twelve —possession of an M-16 machine gun which had not been registered (26 U.S.C. § 5861(d), 5871);
Count Thirteen —receipt of an M-16 machine gun which had been shipped in interstate commerce and had not been registered (26 U.S.C. § 5861(j), 5871);
Count Fourteen —receipt of an M-16 machine gun which had been shipped in interstate commerce after a felony conviction (18 U.S.C. § 922(h), 924);
Count Fifteen —receipt of a .38 caliber revolver which had been shipped in interstate commerce after a felony conviction (18 U.S.C. § 922(h), 924); and
Count Sixteen —carrying a pistol without a license (22 D.C.Code § 3204).
. Appellant Martin was found guilty on counts one through eight and on count ten; appellant Jones was found guilty on counts eleven through sixteen. See n.4 supra. Martin was sentenced to five years in prison on count one and ten years on each remaining count; Jones was sentenced under the Federal Youth Corrections Act, 18 U.S.C. § 5010(c), to ten years on each count. For both appellants, the sentences on all counts were to run concurrently.
. By the time the agents opened the suitcase, they certainly had probable cause to believe that it contained a machine gun — the suitcase fully matched the description provided by the anonymous caller, and the probing of the bag’s exterior (both by the Greyhound employee and by the agents) provided corroboration that the weapon was, in fact, inside. However, while the issue has not been raised by appellants, we note that the “search” may have begun well before the agents opened the suitcase, when they began the careful probing of the bulge in the suitcase’s side. See, e.
g., Hernandez v. United States,
.
United States v. Robinson,
. Id. at 581.
. The agents testified at the suppression hearing that they decided to open the suitcase because of their concern for their own safety and the safety of others. Tr. at 79-80, 84-5, 122. They did not suggest that they were looking for clues to aid in the more rapid solution of this crime, or the more rapid apprehension of the suspected criminals. And the search that they, in fact, conducted would have been unlikely to produce such evidence — the agents simply opened the suitcase, noted its contents, and closed it. Tr. at 39, 45.
. See cases cited n. 12 infra.
.
Coolidge, supra,
at 461,
. As we noted in
Robinson, supra,
the applicability of the “automobile exception” to unoccupied, parked cars — i. e., to cars which are only
potentially
mobile — has been “particularly troublesome for the Supreme Court.”
The
Coolidge
plurality expressly held that mobility which was merely speculative or potential was of “no constitutional significance. ...”
The lower court cases upon which the government relies and which have extended that “automobile exception” to searches of suitcases and other movable items, are readily distinguishable from the facts of this case. In
United States v. Johnson,
Moreover, surveillance in the open, in a “transient and high crime area,” would obviously have been riskier than the surveillance in the present case, which was conducted within the relatively secure — and relatively inaccessible — confines of the Greyhound Terminal baggage area. See discussion of the agents’ safety concerns infra.
See also United States v. Mehciz,
. In some circumstances, police immobilization of an automobile, suitcase, or other movable object, in order to allow time for a warrant to be obtained, may amount to a
de facto
seizure of that object; and where such a seizure is justified, a warrantless search may also be permissible.
See Chambers v. Maroney, supra,
It is questionable whether mere surveillance of the suitcase could be said to constitute a “stoppage of movement” at all. However, even if such a characterization were appropriate, it seems clear that such surveillance would constitute a
lesser
intrusion than a search of the suitcase’s interior.
Compare United States v. Van Leeuwen,
The significant Fourth Amendment interest was in the privacy of this first-class mail; and that privacy was not disturbed or invaded until the approval of the magistrate was obtained.
Id.
at 253,
Thus, even actual interference with the delivery of the suitcase — and such interference was clearly unnecessary at the time of the search— would have been less intrusive than a search of the suitcase’s interior, since it would have left undisturbed appellants’ “significant Fourth Amendment” interest in the privacy of the suitcase’s contents.
. Even prior to the decision in
Warden v. Hayden, supra,
the contraband/“mere evidence” distinction had nothing to do with the warrant requirement. The rule set forth in
Gouled v. United States,
The government’s suggestion that this “contraband” could be seized without a warrant because it was “in plain view” is equally untenable. So far as we are aware, no court has held that something so evidently
not
“in plain view” as the inside of a locked suitcase could still be said to be “in plain view” for purposes
*680
of the Fourth Amendment. However, leaving aside the troubling implications of this somewhat startling assertion, we note that there is an obvious inconsistency between the government’s claim that the agents needed to open the suitcase so that they could confirm what was inside, and their claim that what was inside was already “in plain view.” Finally, of course, this case does not meet the “inadvertence” requirement for the application of the “plain view” doctrine laid down in Justice Stewart’s plurality opinion in
Coolidge, supra,
. The government cites
Terry v. Ohio,
. Appellants have argued that there is an alternative justification for reversal in this case. At trial appellants’ counsel sought to use prior convictions to impeach various government witnesses. With respect to each of these witnesses, the trial judge permitted counsel to use only the witness’ most recent conviction for impeachment purposes; all earlier convictions were excluded.
Appellants contend this limitation on their use of prior convictions to impeach government witnesses violated Rule 609(a) of the Federal Rules of Evidence. Because of our disposition of this case, we need not reach this issue. However, since this issue would almost certainly recur in any future trial of these appellants on the charges at issue here, some comment on the scope of Rule 609 would be appropriate.
In our view, the plain language of the Rule, and the interpretation of that language contained in the Congressional Conference Report significantly restrict a trial judge’s discretion to exclude evidence of this sort. Rule 609(a) provides in pertinent part:
For the purpose of attacking the credibility of a witness, evidence that he has been convicted of a crime shall be admitted if elicited from him or established by public record during cross-examination but only if the crime (1) was punishable by death or imprisonment, in excess of one year . . ., and the court determines that the probative value of admitting this evidence outweighs its prejudical effect to the defendant. . (emphasis added).
This language clearly suggests that the only justification for excluding evidence of prior felony convictions is a determination by the trial judge that the probative value of such evidence would be outweighed by its prejudicial effect to the defendant. This straightforward interpretation of the Rule’s language is strongly supported by the Conference Report. The Report provides:
With regard to the discretionary standard established by paragraph (1) of rule 609(a), the Conference determined that the prejudicial effect to be weighed against the proba *681 tive value of the conviction is specifically the prejudical effect to the defendant [emphasis in original]. The danger of prejudice to a witness other than the defendant (such as injury to the witness’ reputation in his community) was considered and rejected by the Conference as an element to be weighed in determining admissibility. It was the judgment of the Conference that the danger of prejudice to a nondefendant witness is outweighed by the need for a trier of fact to have as much relevant evidence on the issue of credibility as possible. Such evidence should only be excluded where it presents a danger of improperly influencing the outcome of the trial by persuading the trier of fact to convict the defendant on the basis of his prior criminal record [emphasis added], H.R.Rep. No. 93-1597, 93d Cong., 2d Sess. 9-10 (1974), U.S.Code Cong. & Admin.News, pp. 7098, 7103.
It thus appears that under Rule 609,
all
prior felony convictions of prosecution witnesses are admissible (subject only to the time-limit restrictions set forth in Rule 609(b)). See
United States v. Smith
&
Gartrell,
