Defendant-appellant Ramon Rubio-Rivera appeals from a judgment of conviction on one count of possession with intent to distribute less than fifty kilograms of marijuana. 21 U.S.C. § 841(a)(1), 841(b)(1)(D). Defendant’s motion to suppress forty-four pounds of marijuana was denied by the district court and he was convicted after a jury trial. Sentenced to prison for twenty-five months and supervised release for three years thereafter, defendant appeals challenging the denial of his motion to suppress. Our jurisdiction arises under 28 U.S.C. § 1291 and we affirm.
I.
On June 3, 1989, at 8:20 p.m., defendant drove a 1978 Ford LTD into the border patrol checkpoint north of Las Cruces, New Mexico. At the primary checkpoint, the border patrol agent inquired about defendant’s citizenship. The defendant handed the agent a temporary resident alien card, which the agent thought to be valid. The agent testified that during this time the defendant failed to make eye contact and defendant’s hand was shaking. The agent began questioning the defendant about where the defendant came from. Defendant explained that he was returning from Juarez, Mexico, where he had spent five days with friends. No luggage or personal belongings were visible. Ownership of the ear was discussed. The agent became suspicious when the defendant claimed that *1274 the car had been purchased in El Paso two days earlier by a friend. The car had a temporary sticker from Colorado affixed to the rear window. On the floor on the back seat of the car was a one-gallon plastic milk jug partially filled with gas. The agent viewed this as consistent with a reduced capacity gas tank. According to the agent, such specially fabricated gas tanks frequently contain two compartments, one for gas and another for concealing contraband.
The agent asked the defendant about the contents of the trunk. Defendant got out of the car and opened the trunk which was empty. While the agent conducted his inquiry, traffic was backing up on 1-25, the highway on which the border checkpoint is located. After closing the trunk lid, the agent told the defendant to pull over into the secondary checkpoint. While a National Crime Information Center (NCIC) check was made on the vehicle, defendant consented to a search of the vehicle. The agent discovered a gas tank with a concealed compartment containing marijuana.
II.
Defendant contends that directing defendant to the secondary checkpoint exceeded the legitimate scope of the initial stop and violated the fourth amendment. According to the defendant, he was directed to that checkpoint in the absence of a reasonable suspicion that a crime had been committed in violation of the fourth amendment. Though the subsequent search was undertaken with his consent, defendant argues that search was tainted by the constitutional violation and the product of the search must be suppressed as fruit of the poisonous tree.
See Wong Sun v. United States,
In the district court, the government argued that defendant lacked standing to challenge the search of the car. Rec. vol. I, doc. 11 at 2, vol. Ill at 8. At the suppression hearing, defendant testified that he came into possession of the car after he met one Alesandro-Castro in a Juarez bar. Id. vol. III at 12-14. Defendant had never met Alesandro-Castro previously, but agreed to transport the car to the United States because Alesandro-Castro lacked immigration documents. Id. at 14-15. Defendant did not obtain Alesandro-Castro’s first name, address or telephone number and no arrangements were made for the car’s return or delivery to another person. Id. at 15-16. Defendant also testified that he attempted to buy the car, but that Alesandro-Castro told him that he should just take the car and see if he liked it. Id. at 15. The district judge rejected the defendant’s contention that the car was a gift, id. at 41, but did not decide the standing issue. At trial, the defendant disclaimed any knowledge or interest in the marijuana.
Given the personal nature of interest protected, standing is a matter of substantive fourth amendment law.
Rakas v. Illinois,
Here, the district court found that the car was not a gift to the defendant, but did not make further findings on the standing issue. We need not remand this case for further findings, however, because the legally operative facts on the standing issue are uncontroverted. Defendant testified that Alesandro-Castro, the apparent owner of the car, loaned him the vehicle. He later testified that Alesandro-Castro directed him to papers in the glove box indicating ownership. Rec. vol. IV at 134. Thus, this ease is unlike
Erwin
and
Arango
in which the defendants lacked standing because they “failed to introduce any evidence to show legitimate ownership or possession of the automobile, which might establish a legitimate expectation of privacy in the particular area searched.”
Erwin,
The standing inquiry focuses on reasonable expectations, hence, a defendant is not required “to produce legal documentation showing a chain of lawful custody from the registered owner” to himself.
Arango,
III.
Defendant contends that once the agent was satisfied that his immigration card was valid, defendant should have been released rather than required to proceed to the secondary checkpoint.
Cf. United States v. Guzman,
The rationale of
MartinezFuerte
is grounded in the government’s legitimate concerns about citizenship and immigration status of those entering into the United States and the detection of unlawful entry.
Martinez-Fuerte,
The border agent may question the driver and passengers about their citizenship and immigration status, and ask them to explain suspicious circumstances. Any further detention must be based on consent or probable cause. United States v. Brignoni-Ponce,422 U.S. 873 , 881-82,95 S.Ct. 2574 , 2580,45 L.Ed.2d 607 (1975).
Id.
at 891. Thus, even when the questions asked at the primary checkpoint allay all concerns about citizenship and immigration status, an agent still may direct a vehicle to a secondary checkpoint and further question the occupants on the basis of reasonable suspicion that a crime has been committed.
United States v. Johnson,
Merely because the agent was satisfied that defendant had a valid immigration card, however, does not mean that the agent required reasonable suspicion to have defendant proceed to the secondary checkpoint. The agent ran an NCIC check on the vehicle at the secondary checkpoint, rather than letting traffic back up at the primary checkpoint. To the extent that the agent had not resolved all immigration concerns about the defendant and the vehicle, the agent did not require reasonable suspicion to complete his normal inquiry under these circumstances, including the NCIC check, at the secondary checkpoint.
Martinez-Fuerte,
In any event, the referral to the secondary checkpoint is acceptable under the standards applicable to investigative detentions. Under the fourth amendment, a valid investigative detention may occur when “specific and articulable facts and rational inferences from those facts give rise to reasonable suspicion that a person has committed or is committing a crime.”
Espinosa,
*1277
The district court determined that referral to the secondary checkpoint was reasonable given the circumstances. At the primary checkpoint, the defendant was apprehensive and would not establish eye contact when questioned. Although the defendant indicated that he had been on a trip for several days, the car contained no luggage or personal belongings. The car had a temporary Colorado sticker, yet defendant claimed that the car had been purchased in El Paso. Finally, the car had a container of gas on the rear floor which the agent testified was consistent with a concealed compartment. These facts, together with their reasonable inferences in light of the agent’s experience concerning unlawful immigration and drug interdiction,
see Terry v. Ohio,
Because we hold that the referral to the secondary checkpoint did not violate the fourth amendment, we need not address the defendant’s argument that his consent to search the vehicle was tainted by an earlier fourth amendment violation. Defendant did not challenge the voluntariness of his consent on other grounds and when valid consent is obtained, the fourth amendment is not violated,
United States v. Bell,
AFFIRMED.
