Dеfendant Richard Maldonado appeals from his conviction for possession with intent to distribute cocaine, a violation of 21 U.S.C. § 841(a)(1). Maldonado challenges the district court’s denial of his motion to suppress evidence on the ground that his Fourth Amendment rights were violated. Maldonado also claims that the trial court erred in admitting statements he made during a plea bargain proffer with the government. For the reasons stated below, we will affirm.
I. Background
On February 19, 1993, Richard Maldonado was traveling from Los Angeles to New York on Amtrak Train Number 4 when he disembarked at a stop at Chicago’s Union Station. Agents Gary Boertlein and Kenneth Krok, two members of a Drug Enforcement Administration (DEA) task force, were conducting routine surveillance of this particular train because it was known to travel along a popular route for drug traffickers. Agent Boert-lein noticed Maldonado walking rigidly from the train toward the station house and in such a manner as to attract the agent’s attention. Agent Boertlein also testified that he had observed an unusual square shape protruding from Maldonado’s bag.
Agents Boertlein and Krok decided to follow Maldonado into the inner station. The two agents approached Maldonado and, after *938 identifying themselves as police officers, asked if he would mind speaking with them. Maldonado calmly agreed. Upon request, Maldonado showed the agents his train ticket and an identification card. The train ticket had been purchased in defendant’s name, in cash, one-way from Los Angeles to New York, and no telephone contact number had been provided. The agents briefly interviewed Maldonado and then asked him if they could search his luggage because they were looking for people traveling with large quantities of illegal drugs. Maldonado consented to the search of his luggage. While searching Maldonado’s bag, Agent Boertlein came across two boxes which were each marked “juicer” and which purportedly contained juice machines inside.
Both parties acknowledge that Agent Boertlein requested further consent from Maldonado to search the “juicer boxes.” However, at the suppression hearing there were discrepancies in the testimony regarding Maldonado’s response to Agent Boert-lein’s request. The two DEA agents both testified that Maldonado affirmatively consented to Agent Boertlein’s request to search the juicer boxes; nonetheless, neither agent was able to recall the specific words used by Maldonado to express his consent. Agent Krok testified that he did not hear Maldonado’s response because of the background noise from thé electronic doors, but that he did see Maldonado make an oral response and nod his head in a positive manner. Agent Boertlein testified that Maldonado made an affirmative response to his request to search the boxes, but Boertlein was unable to recall the exact words Maldonado used.
Maldonado was able to testify in greater detail. He testifiеd that Agent Boertlein asked him to open the juicer boxes, which were taped shut. Maldonado testified that he told Agent Boertlein that he did not want to open the juicer boxes because the items inside were gift wrapped. According to Maldonado, Agent Boertlein then volunteered to open the containers himself. Maldonado testified that he again expressed his concern regarding the gift wrap, and Agent Boertlеin responded that he had been conducting these kinds of searches for five years and that he would be careful not to disturb the gift -wrapping. The district court made no explicit determination as to which testimony it found more credible, but the court evaluated Maldonado’s testimony in determining the scope of consent because it was “[t]he only testimony we have as to what words were spoken by Mr. Maldonado.” Tr. of Sept. 16, 1993 at 341.
The parties are at least in agreement on what transpired next. Agent Boertlein opened the juicer boxes and found no gift-wrapped juice machines inside the boxes; instead, he found several kilogram-sized packages of cocaine. Maldonado was subsequently placed under arrest.
On March 9, 1993, a grand jury indicted Maldonado on one count of possession with intent to distribute approximately six kilograms of cоcaine in violation of 21 U.S.C. § 841(a)(1). Maldonado filed a motion to suppress the cocaine seized by the DEA agents. At the end of an extensive suppression hearing, the district court ruled that Maldonado had consented both to the initial encounter with the officers and to the search of his luggage. The court also stated that under
Florida v. Jimeno,
A jury found Maldonado guilty, and the district court sentenced him to 180 months’ imprisonment. Maldonado filed a timely appeal, challenging the district court’s denial of his motion to suppress as well as the admission of his proffer statements into evidence at trial. We have jurisdiction pursuant to 28 U.S.C. § 1291.
*939 II. Analysis
A. Fourth Amendment issues
On appeal, Maldonado raises two separate Fourth Amendment challenges to the district court’s denial of his motion to suppress evidence. First, Maldonado claims that the drug enforcement officers’ initial encounter with him constituted an illegal seizure. Second, Maldonado claims that Agent Boertlein’s search of the juicer boxes exceeded the scope of his consent to search his luggage. We will not disturb the district court’s denial of a motion to suppress unless the decision was clearly erroneous.
United States v. McCarthur,
1. The initial encounter
Maldonado contends that the DEA agents’ initial encounter with him violated his Fourth Amendment rights. However, not all encounters between police officers and citizens implicate Fourth Amendment concerns.
United States v. Edwards,
“The question of whether a particular encounter is voluntary ‘is a factual one, dependent on the circumstances of each case; accordingly, our standard of review is a limited inquiry into whether the decision of the district court was clearly erroneous.’”
Id.
(quoting
United States v. Espinosa-Alvarez,
Looking at the totality of the circumstances, the record supports the district court’s conclusion that this was a consensual encounter and that a reasonable person in Maldonado’s position would not have felt coerced. The encounter took place in the middle of a publiс train station, the drug enforcement officers were dressed in civilian attire, and no weapons were displayed. Furthermore, the agents testified that they specifically told Maldonado that he was free to leave, that he was not under arrest, and that he was not required to answer their questions. The district court’s decision that Maldonado freely consented to the encounter was not clearly erroneous. As this Court notеd under similar circumstances in
United States v. High,
*940 2. Search of the luggage and juicer boxes
The district court also found that Maldonado had freely consented to the searсh of his luggage. In support of this conclusion, the court pointed out that Maldonado had bent down, unlocked the bag within which the cocaine packages were ultimately found, and allowed the agents to examine the inside of the bag. Consensual searches are acceptable under the Fourth Amendment because it is reasonable for law enforcement officers to conduct a search once thеy have been permitted to do so.
Jimeno,
Maldonado does not contest the district court’s finding that he consented to the search of his luggage;
2
rather, he argues that Agent Boertlein’s search of the juicer boxes exceeded the scope of his initial consent to the search of his luggage. Thus, we must first determine what was the scope of Maldonado’s initial consent. The scope of a search is generally characterized by its expressed object.
Jimeno,
It is undisputed that before Maldonado consented to the search of his luggage, the drug enforcement officers told him that they were looking for individuals traveling with large quantities of illegal drugs. Thus, the expressed object of the search was illegal drugs. When Maldonado gave the DEA agents his permission to search his luggage for drugs, a reasonable person would have understood Maldonado’s consent for the search of his luggage to include permission to search any items inside his luggage which might reasonably contain drugs. Under similar facts, this Cоurt concluded in
Berke
that the criminal suspect “should have expected that the officers would examine the contents to discover whether narcotics were within the bag.”
Berke,
This Court addressed the scope of consent issue in
United States v. Dyer,
Having determined the scope of Maldonado’s consent to search his luggage, we must now examine whether Maldonado limited the scope of that consent. Maldonado argues that he withdrew or limited the scope of his consent to prohibit Agent Boertlein from searching the juicer boxes, and he correctly points' out that the case law leaves open the possibility for the criminal suspect to limit the scope of his consent or to withdraw it completely.
See Jimeno,
However, the district court found that Maldonado did not withdraw his consent, nor did he limit the scope of his consent in the sense of refusing to allow Agent Boertlein to look inside the juicer boxes. Instead, the сourt found that Maldonado simply expressed his concern that he did not want the gift-wrapped packages inside the juicer boxes to be damaged by the search. In deciding this issue, the district court held:
The conversation that defendant Maldonado testified about, in my opinion, from evaluating all the evidence and all of the circumstances of the occurrence that afternoon, was that defendant Maldonado was concerned that the packaging not be harmed in any way, that because the items in the box were gift-wrapped, he wanted the packaging to remain. His concern was the integrity of the packaging, not the refusal to look inside the packaging....
The concern here and the expression, which is the only expression I can evaluate, was concern over the gift wrapping. Well, as we’ve seen from looking at the physical evidence, there wasn’t any gift wrap, although I accept the further testimony of Mr. Maldonado that he was told there was gift wrapping. And, again, the fact that he was told there was gift wrapping prior to getting on the train with the boxes which contained the cocaine, indicates to me that Mr. Maldonado did not want the packaging harmed in any way, and that he was not refusing to allow an examination of the items inside. Hе just wanted that examination, if it was going to take place, to take place in a manner so as to not harm the packaging.
Tr. of Sept. 16, 1993 at 343-44.
Determining the parameters of a consensual search is an issue of fact that must be distilled from the totality of the circumstances surrounding the search; moreover, the resolution of such factual questions is entrusted to the district court and will not be lightly overturned on appeal.
*942
United States v. Hardin,
B. Admissibility of proffer statements
Finally, Maldonado argues that the trial court erred in admitting statements he made during a plea bargain proffer with the government. On March 5, 1993, Maldonado met with government agents to enter into plea negotiations. Prior to any discussions, representatives from the United States Attorney’s office gave Maldonado and his lawyer a “proffer letter” to read. The letter requested a proffer of Maldonado’s testimony, and it also contained a warning that the government could use the resulting proffer statement at trial for purposes оf impeachment or rebuttal testimony should Maldonado testify contrary to the substance of the proffer. After both Maldonado and his lawyer signed the proffer letter, Maldonado provided the government with information. During the proffer session, Maldonado admitted that he had distributed cocaine on other occasions and that he had consented to Agent Boertlein’s request to search his luggage.
At trial, Maldonado testified on his own behalf. His testimony on direct examination contradicted some of the statements he had made during his proffer session. The government informed the court that it intended to use the proffer statements to impeach Maldonado, and Maldonado objected. The trial court ruled that the proffer statements were admissible for impeachment purposes. Maldonado now appeals.
Under Federal Rule of Criminal Procedure 11(e)(6) and Federal Rule of Evidence 410, statements made during plea negotiations are generally not admissible at trial. However, the law in this Circuit is well established that such proffer statements can be used for impeachment purposes if a defendant signs a proper waiver.
United States v. Dortch,
Maldonado points out that the Ninth Circuit has recently held that the protection against the admission of statements made during plea negotiations cannot be waived,
United States v. Mezzanatto,
III. Conclusion
For the reasons set forth above, we Affirm the district court’s order denying Maldonado’s motion to suppress and the judgment of conviction.
Notes
. We need not address the issue of whether the drug enforcement officers had a reasonable suspicion to justify an investigatory stop (i.e., a
Terry
stop) of Maldonado. Such an inquiry is unnecessary since the district court found that Maldonado consented to the encounter with the drug enforcement officers, and the court's decision was not clearly erroneous. In a consensual encounter such as that which was found to have occurred in the instant case, “the degree of sus
*940
picion that is required is zero.”
Edwards,
. Although Maldonado does not contest this issue, we should make it clear that the district court's determination that Maldonado freely consented to the search of his luggage was well supported by the evidence and was not clearly erroneous.
See United States v. Rice,
. Maldonado certainly cannot argue that Agent Boertlein failed to act within the limiting parameter that he not damage the gift wrapping inside the juicer boxes because, as it turned out, the boxes did not contain any gift-wrapped juicers.
