The well-known overnight courier Federal Express opened a suspicious package deposited with it for delivery. It contained a white powder and the carrier notified the federal Drug Enforcement Administration (“DEA”). A field test by a federal agent indicated cocaine. The DEA, in coordination with Federal Express, performed a controlled delivery of the package to the intended recipient. In the course of the package’s travels through the Federal Ex *845 press system, it was specially handled by the courier’s personnel. At its terminus, in Peoria, Illinois, the package was opened for the last of many times, jointly by a federal agent, a member of the Illinois Police, and a Federal Express employee. The package was then delivered, according to its address, to the residence of Ms. Koenig. Shortly afterward the DEA obtained and executed a search warrant on the residence and seized several items including the package. While the police were searching Koe-nig’s apartment, defendant Graf knocked on the door and the officers allowed him to enter. The officers immediately “frisked” Graf and found $1,800 in cash on his person. (Graf has not challenged the legality of the search.)
On September 22, 1986, a federal grand jury returned an indictment charging both Koenig and Graf (along with two other co-defendants whose participation is not relevant here) in connection with the shipping of cocaine. The indictment charged Koenig and Graf with conspiracy to distribute cocaine, 21 U.S.C. § 841(a)(1); and with possession of cocaine, 21 U.S.C. § 844(a); and charged Koenig alone with attempting to possess cocaine with intent to distribute, 21 U.S.C. § 846. Koenig, joined by Graf, moved before trial to suppress the evidence found in the package arguing that it was the fruit of an illegal search. They argue that the police required a warrant to examine the package at its origin, notwithstanding the initial opening of the parcel by Federal Express. Further, they contend that a warrant was required for the reopening of the package in Peoria, Illinois, prior to its delivery because the package had left the hands of the DEA in transit. The district judge denied the motion, and Koe-nig entered a conditional plea of guilty to the charges of conspiracy to distribute cocaine and attempt to possess cocaine. The plea was conditioned upon her right to appeal the denial of the suppression motion. Fed.R.Crim.P. 11(a)(2). Graf was tried and convicted of conspiracy to distribute cocaine, as well as on a possession charge not part of this appeal. Graf argues that the evidence only showed his relationship with Koenig was that of buyer and seller, thus he should not have been convicted as a coconspirator in the conspiracy to distribute. He also adopts Koenig’s arguments on the impropriety of admitting the cocaine in evidence. We agree with the district judge and hold that he properly refused to suppress the reception of the package and its contents in evidence, and that the evidence received was sufficient for a jury to convict Graf as a coconspirator.
I
On July 17, 1986, Federal Express Senior Security Specialist Jerry Zito was at the West Palm Beach Federal Express station on what he described as a “routine station visit.” While there, he conducted a visual inspection of packages received over the counter and detected an odor of laundry soap or fabric softener emanating from one of the boxes. Cocaine is ofttimes packed in laundry products to mask its smell. His curiosity piqued, Zito checked the West Palm Beach, Florida, telephone directory and found no listing for the shipper of record. He inquired of another employee about the address the shipper had given and was informed that it was fictitious. Zito proceeded to open the package. Inside, wrapped in fabric softener sheets, he found two transparent plastic bags containing white powder. He contacted the local DEA office. Special Agent Weitz responded and field tested the powder. The test indicated cocaine.
After replacing all but a small sample of the cocaine with cornstarch, Weitz repacked the bags and marked the package. After consulting with DEA Agent Hershey in Springfield, Illinois, Weitz returned the package to the West Palm Beach Federal Express office with instructions to perform a controlled delivery. The package was routed through the Federal Express hub in Memphis, Tennessee. While in Memphis, the package was kept in a Federal Express safe and was opened on two occasions by Federal Express employees to check its contents. The box was once again opened upon its arrival in Peoria, Illinois, on July 19, this time by Agents Hershey and Simmons of the Illinois State Police and a *846 Federal Express employee. Hershey field-tested the remaining sample of the original powder, again with positive results for cocaine. The package was again sealed and then delivered to its intended recipient, Koenig. A federal search warrant was then obtained and executed on Koenig’s apartment, resulting in the seizure of several items including the Federal Express package containing the packets of cornstarch and cocaine samples.
II
Koenig and Graf ask this court to reverse the district court’s refusal to suppress the evidence found in the package. Graf’s appeal on this point is easily dismissed. Because Graf was neither the sender nor the addressee of the package and thus has no privacy right in it, he therefore has no standing to make the request. On appeal, he fails to point to any other source of a personal privacy interest in Koenig’s mail. We need not decide whether a privacy interest could be recognized given proof of an ownership interest in the contents of the parcel and a showing of the ability to control the parcel once delivered. A wife, for example, might have a privacy interest in an envelope containing a life insurance policy covering both husband and wife that was sent to the household addressed to the husband. Graf fails to qualify for that sort of standing, however, because he fails to establish even a limited privacy interest in the package. Graf never asserted that he was part owner of the drugs in transit. To the contrary, he has consistently argued that he was never a part of the conspiracy to distribute, but only a frequent customer of Koenig. His position is that his relationship with Koenig was no more than a buyer/seller, the mandatory implication being that he had no interest, title or control over the drugs Koenig obtained until such time as he had purchased them from her. Graf also points out that “[t]here is ... no evidence that [he] at any time resided with any of the principals.” Graf Brief at 9. Consequently, he could not have exerted control over Koenig’s mail upon delivery. Without a privacy interest in the package, Graf lacks standing to assert Fourth Amendment objections to the police conduct. It is well established that Fourth Amendment rights are “personal rights which ... may not be vicariously asserted.”
Alderman v. United States,
Unlike Graf, Koenig has a privacy interest in her mail and so may test the legality of the conduct used to search and seize the same. Her major contention on appeal is that Federal Express employee “Zito was acting as a
de facto
instrument or agent of the government at the time of the search.” As such, she maintains that any search he conducted must be evaluated as if performed by a federal official. Under the circumstances, Zito’s warrantless search was unreasonable, says Koenig, and so any evidence discovered must be excluded from subsequent criminal proceedings. For the purposes of this appeal, we may assume that, had Zito been a federal agent, his warrantless search would have been unreasonable.
But see United States v. Ford,
It is axiomatic that the Fourth Amendment does not apply to private entities. Like much of the Constitution, “it was intended as a restraint upon the activities of sovereign authority.”
Burdeau v. McDo
*847
well,
Koenig concedes that she bore at least the burden of establishing a
prima facie
case that the search was instigated by a governmental agent rather than a private entity. She also bore the ultimate burden of persuasion,
see Nardone v. United States,
Instead, Koenig relies on
United States v. Walther,
Koenig argues here that Federal Express lacks a sufficiently compelling private interest in opening packages it suspects to contain drugs. In support she cites a memorandum written by Zito to senior managers explaining the problem Federal Express has with use of its services to ship illegal items of all sorts. The memo instructs managers to contact Zito if approached by law enforcement officials and notes the value of good relations with law enforcement agencies. 2 Other evidence shows a history of cooperation between Zito and Federal Express on one hand and various law enforcement authorities on the other. Since Zito began his employment with Federal Express, he has contacted the DEA at least eight times. 3 He has testified in two DEA cases. The district court found, however, that Zito never worked as an informant for the DEA, has never been rewarded by the DEA for his aid, nor even discussed with law enforcement authorities what to look for in Federal Express shipping. Koenig also introduced an affidavit showing contact between Federal Express and the DEA at the national level. Representatives from two DEA offices apparently met with Federal Express personnel to assist in the development of a drug shipper’s profile. The same affidavit notes that “[t]hose parties attending these meetings were apprised of DEA’s national policy regarding DEA interaction with common carrier personnel. Specifically, the DEA does not request that common carriers broaden the scope of their search to include drugs or related contraband, but will respond to calls to assist when suspected contraband is found.” 4
*849
The district court found that on this background of information, Zito’s search can only be reasonably considered as that of a private party. It found that Federal Express acted for legitimate reasons of its own when examining packages for drugs. The conclusion is not clearly erroneous.
Anderson v. City of Bessemer City,
We affirm the district court’s finding that Koenig failed to prove the conditions she concedes are necessary to convert the actions of a private employee into an action of a governmental agent: Although the DEA may have known of Federal Express’s security search policy, it is clear that Federal Express acted for its own private, business purposes. We note, however, that the factors Koenig identified are not independently sufficient to convert a private search into a governmental search. To effect such a transformation, a defendant must prove some exercise of governmental power over the private entity, such that the private entity may be said to have acted on behalf of the government rather than for its own, private purposes.
Cool
*850
idge,
For this reason, Koenig’s reliance on
United States v. Davis,
Application of the correct rule in the future will avoid what we perceive as the fundamental flaw in Koenig’s argument; according to Koenig, the government should have been required to prove that Federal Express had no intent to assist in the government’s enforcement of the criminal laws to avoid having Federal Express deemed its agent. But, of course, it is every citizen’s civic duty to do what he can to aid in the control and prevention of criminal activity, and “it is no part of the policy underlying the Fourth and Fourteenth Amendments to discourage citizens from aiding to the utmost of their ability in the apprehension of criminals.”
Coolidge,
Ill
Koenig also challenges the warrantless search of the package in Peoria, Illinois, prior to delivery to her. She asserts that, having let the package out of their immediate control as it traveled throughout the Federal Express system, the DEA was required to have a valid search warrant before opening it again when it reached Peoria. In her view, the Peoria search must be viewed in isolation: Although the law enforcement personnel had marked the package for positive identification, and knew the contents of the package because of their previous searches, Koenig believes this establishes nothing more than probable cause for a warrant and not an excuse for a warrantless search. The government gave two responses to the trial court: 1) Koenig no longer had Fourth Amendment interest in the package after the package was opened and the contraband discovered, and 2) the Federal Express employees who specially shepherded the package through the system were constructive federal agents in order that they might ensure that the package was in the “continuous con *852 trol” of the DEA. The arguments are similar, but the first is broader.
Under the first argument, once a private actor has legally opened a package, has found suspected contraband within the package, and has notified the government of the discovery, the government need not obtain a search warrant before examining and field testing the contents.
10
No warrant is required in such a situation, because the private, legal search has destroyed any legitimate expectation of privacy in the package’s contents.
United States v. Jacobsen,
The government’s second argument, the “continuous control” approach, is a prophylactic rule that has been used by several courts (but has not been addressed directly by the Supreme Court) to protect the same privacy interests implicated in
Andre-as. See, e.g., United States v. Bulgier,
The government’s initial response, that Koenig had lost any legitimate expectation
*853
of privacy in the package, was proper. As the Supreme Court made clear in
Andreas,
the “legitimate expectation of privacy” approach may be applied to controlled deliveries, even when there has been a break in the chain of custody. Thus, the district court need not have rejected the government’s expectation of privacy argument merely because Koenig’s package temporarily left the custody of the DEA when the DEA forwarded the package by Federal Express.
Andreas,
“The Fourth Amendment protects legitimate expectations of privacy rather than simply places. If the inspection by police does not intrude upon a legitimate expectation of privacy, there is no ‘search’ subject to the Warrant Clause. The threshold question, then, is whether an individual has a legitimate expectation of privacy in the contents of a previously lawfully searched container. It is obvious that the privacy interest in the contents of a container diminishes with respect to a container that law enforcement authorities have already lawfully opened and found to contain illicit drugs. No protected privacy interest remains in contraband in a container once government officers lawfully have opened that container and identified its contents as illegal. The simple act of resealing the container to enable the police to make a controlled delivery does not operate to revive or restore the lawfully invaded privacy rights.”
Illinois v. Andreas,
We refuse to delineate what fact situation would present a reasonable likelihood that a package’s contents have been changed. Koenig relies only on the fact that the package temporarily left the hands of the DEA, but does not explain how the excursion could have renewed her expectation of privacy. The act of sending something by common carrier does not itself create a significant risk of tampering.
See McConnell,
595 P.2d at n. 22. Once the package was opened by Federal Express and its contents were in plain view, any privacy interest the addressee had in the package was destroyed. As long as the package was shipped in such a manner as to ensure the security of its contents, the further travels of the parcel could do nothing to restore the addressee’s lost privacy
*854
interest. It is as if the package had been repackaged by DEA in transparent wrapping so that its contents were at ail times in plain view as it moved through the system.
See Jacobsen,
IV
Having affirmed the district court’s refusal to suppress evidence against Koe-nig, we move to co-defendant Graf’s contentions regarding his conviction of conspiracy to distribute cocaine. Graf believes he was entitled to a directed verdict or at least a new trial, arguing that the evidence established only that he was a customer of Koenig rather than a full-fledged member of her conspiracy. True, the purchase of drugs from a conspiracy, without more, does not rise to the level of membership in the conspiracy.
United States v. Douglas,
The evidence at Graf’s trial, taken most favorably to the government,
Glasser v. United States,
Conclusion
The district court’s decision to refuse to suppress the package and its contents’ reception in evidence was proper. Federal Express security personnel opened the package for their own reasons and no evidence was introduced suggesting governmental control of Federal Express employees. The opening of the package and the placement of its contents in plain view of DEA destroyed any privacy interest the package might have initially supported. Once lost, subsequent examinations of the package were not Fourth Amendment searches, until some new privacy interest attached. The subsequent opening of the parcel in Peoria was therefore of no constitutional significance. Graf’s motions for directed verdict and new trial were properly denied. The evidence was sufficient to allow a jury to conclude that he was more than an occasional purchaser for private use, that he was part of the conspiracy to distribute cocaine.
Affirmed.
Notes
. An examination of the common law of agency is helpful in demonstrating why no simple formula should be applied. An agency relationship "results from the manifestation of consent by one person to another that the other shall act on his [or her] behalf and subject to his [or her] control, and consent by the other so to act." Restatement (Second) of Agency § 1 (1958). Although mutual consent (either express or implied) is necessary to the relationship, neither consideration nor formal offer and acceptance are required. Id. at §§ 15-16. Ultimately, the existence of an agency relationship is a question of fact. Id. at § 1 comment b. We do not *848 assert that the constitutional issue before us necessarily must be governed by the common law definition of agency. However, the highly factual nature of the inquiry supports our position that the case before us may not be resolved by the overly simplistic approach suggested by Koenig's reading of Walther.
. The text of the memo in full reads:
"SUBJECT: EMPLOYEE CONTACT WITH POLICE
An unfortunate situation exists in this Company, and in any company that deals with freight, especially companies who provide an overnight service. There are persons who use companies like Federal Express to ship drugs, stolen property, fraudulent documents and any other related illicit materials. This provides the shipper with the convenience of rapid, guaranteed delivery of their merchandise, along with a certain degree of anonymity. Because of this situation, FEC employee contact with law enforcement officials is inevitable, although rare.
If you as a manager, or one of your personnel, are contacted by a law enforcement official, it is imperative that I be contacted immediately so that I may deal with the situation at its onset, to insure that the FEC employees welfare is safeguarded.
Please remember that our relationship with law enforcement agencies is an extremely valuable asset, therefore, at all times attempt to be courteous and develop an understanding of the job they are trying to do.”
. The parties in their briefs and at oral argument were unable to clarify what is meant by "contact.”
. The affidavit of Raymond L. Vinsik, Chief, Cocaine Investigations Section, DEA, reads in full:
"met with Federal Express Company (FEC) security executives, at FEC’s request, in January 1984, to assist FEC in compiling a drug shipper’s profile for use by FEC personnel. As a result of that meeting, the DEA Memphis Resident Office is routinely alerted by Federal Express Corporate Security of all suspected drug interceptions. It is my understanding that this routine is still followed. Also, in June 1983, the DEA Memphis Resident Office assisted FEC in initiating a program with the local police involving the periodic use of FEC of a local police drug sniffing dog to assist them in their anti-drug efforts. Our inquiry also revealed that between 1979 and 1984, the Air Transport Association of America and the U.S. Civil Aeronautics Board held meetings to discuss operational interaction between airline employees and Government law enforcement agents. DEA Headquarters representatives, FEC security executives, representatives from other government entities and common carriers participated in these meetings. Those parties attending these meetings were *849 apprised of DEA’s national policy regarding DEA interaction with common carrier personnel. Specifically, DEA does not request that common carriers broaden the scope of their search to include drugs or related contraband, but will respond to calls to assist when suspected contraband is found. Finally, DEA appealed to common carrier security managers at the national level to have all their employees recognize and perform their civil duty in assisting drug law enforcement when it was appropriate.”
. Policy No. G10-5: "It is Federal Express policy to protect its personnel, its customers, and the company against all types of criminal activity (both internal and external) and acts of nature by the development and application of appropriate methods of prevention.”
. Policy No. G10-20: "It is the policy of Federal Express to open and inspect packages within the Federal Express system for safety and security reasons.”
. Policy No. G10-20-1 states that corporates security “opens and inspects packages on a random and periodic basis. If an illegal substance is found, contact authorities.”
. The so-called "silver platter doctrine” is not to the contrary. In some situations, evidence illegally obtained by state police cannot be used by federal officials.
Gambino v. United States,
. Market forces will naturally limit private anti-crime efforts. If the private anti-crime conduct is itself illegal, the private individual will be liable to injured parties, notwithstanding his good intentions. Federal Express is not exposed to any liability in this case because it reserved the right to search the package in the contract of carriage. Nevertheless, it is not inconceivable that some potential customers will shy away from Federal Express because they do not want to chance having their parcels opened. No doubt most of these deterred customers desire to ship illicit materials and Federal Express would reject these packages anyway if it knew what was in them. Some legitimate customers may also be deterred, however, because they desire privacy for reasons other than evading the law. Also, searching packages requires time, and personnel, and so costs money. A corporation must strike a balance between its public spiritedness and its profit margin.
. Because the constitution applies only to government activity, no constitutional standard of reasonableness limits a search carried out by a private actor. Thus, we need not decide whether Zito’s search was reasonable.
United States v. Jacobsen,
. Because we affirmed the district court's result on the expectation of privacy argument, we need not consider, for example, whether Federal Express employees became governmental agents for purposes of completing the controlled delivery. Instead, considerations such as the nature of the shipper, the security methods provided, and the actions of the shipper's employees become a part of the fact pattern to be considered in answering the ultimate question whether the package was sufficiently secured during the controlled delivery. As we read Andreas, its chief virtues are simplicity and *853 directness. Andreas achieves those virtues by shifting the focus of the inquiry away from peripheral, subsidiary issues in favor of concentrating on the real issues — the government’s right to obtain and use appropriate, probative evidence to convict criminals and the defendant’s right to be protected from the use of tainted evidence.
