¶ 1. Defendant Leland Lawrence appeals from orders of the Orleans District Court denying his motion to suppress evidence secured pertinent to his arrest for driving while under the influence of intoxicants, in violation of 23 V.S.A. § 1201, by a Vermont state police officer at the United States Port of Entry in Derby Line, Vermont, and denying his motions to dismiss the resultant criminal prosecution and companion civil suspension proceeding. On appeal, defendant argues that the trial court erroneously concluded that defendant’s detention in the customs building at the border crossing prior to the arrival of the arresting officer was objectively reasonable. Defendant also claims the trial court erred in failing to find that defendant was unlawfully arrested by a United States customs inspector for violating 23 V.S.A. § 1201. We affirm.
¶ 2. On September 19, 2001, defendant and three adult male companions attempted to reenter the United States from Canada at the Derby Line Port of Entry. United States customs inspector A. Michael Richard was on duty at the primary inspection lane arriving from Canada when, at approximately 8:14 p.m., a vehicle driven by defendant entered thе lane and was stopped for inspection. Inspector Richard posed customary screening questions to defendant and his companions regarding their citizenship and the purpose of their trip. Defendant informed the inspector that the group was returning from an adult entertainment club where they had con *601 sumed alcohol. In the inspector’s opinion, the answеrs provided by defendant and his passengers were given in a manner that was out of the ordinary for the current situation; that is, in the heightened security at the border eight days after the September 11 attacks on the United States. Inspector Richard then asked to examine the four men’s driver’s licenses and to inspect the vehicle. Inspector Richard kept the men’s licenses in his possession throughout the rest of the inspection process.
¶ 3. Inspector Richard then inspected the interior of the vehicle. Upon opening the back area of the vehicle, inspector Richard smelled alcohol. He found, among other things, empty beer cans and an ice chest containing a partially empty, half-gallon bottle of vodka. After сompleting his search of the vehicle, inspector Richard asked defendant to pull his vehicle out of the primary inspection lane, park, and then enter the customs building for a secondary inspection. As defendant drove to the secondary inspection station, inspector Richard called the Vermont state police and notified them that he believеd defendant “had consumed too much alcohol.”
¶ 4. After entering the customs building, inspector Richard asked defendant and his companions to complete baggage declarations. Unable to immediately complete the secondary inspection, inspector Richard left defendant and the others in the customs building and returned to his post in the primary inspection lane to continue his inspections of other vehicles entering the country. According to inspector Richard, it was' not unusual for people to have to wait “for whatever time period is necessary in order to complete the inspection.” Inspector Richard then alternated between conducting primary inspections and finishing defendant’s secondary inspection. When traffic subsided in the primary lane, Richard would “try to continue the processing [of defendant] by reviewing baggage declarations, [and] by inspecting the car.”
¶ 5. At 9:23 p.m., Vermont state police Corporal Albert Stringer arrived at the border crossing. Inspector Richard relayed his observations to Corporal Stringer and showed the officer defendant’s vehiclе, the empty beverage containers, and the contents of the cooler. Inspector Richard then brought Corporal Stringer to the customs building, where Stringer confronted defendant. Corporal Stringer observed that defendant was unsteady on his feet, that his eyes were bloodshot and watery, and that a strong odor of intoxicants emanated from his person. Defendant admittеd to Corporal Stringer that he had consumed four to five drinks prior to 8:00 p.m. Accordingly, Corporal Stringer administered three field sobriety tests, which provided further indicia of intoxication. Stringer also administered a nonevidentiary breath test, which indicated that defendant was impaired.
V 6. Defendant was then taken into custody by Corporal Stringer and transported to the state poliсe barracks for processing, where he was advised of his Miranda rights. Defendant invoked his rights, and no further interrogation occurred. Defendant was then advised of his rights under-the state’s implied consent law, 23 V.S.A. § 1202. After acknowledging- these rights and consulting with an attorney, defendant provided a breath sample for evidentiary testing. The results of this test indicated a blood alcohol content of 0.114%.
¶ 7. Defendant was charged with a violation of 23 V.S.A. § 1201(a)(2) for operating a motor vehicle on a public highway while under the influence of intoxicants and was issued a notice of driver’s license suspension pursuant to the civil suspension statutory procedure. See 23 V.S.A. § 1205. A civil suspension hearing was held, at which defendant moved to dismiss the civil suspension case, averring that he was unlаwfully seized and de
*602
tained by inspector Richard, and that evidence resulting from that seizure must be excluded. Subsequently, defendant filed a motion to suppress all evidence emanating from his detention and arrest in the criminal case and renewed his motion to dismiss in the civil suspension case. The trial court denied defendant’s motions. Relying primarily on this Court’s decision in
State v. Garbutt,
¶ 8. We have routinely observed that this Court reviews motions to suppress de novo.
State v. Chapman,
*603
¶ 9. Ultimately, the determination we are asked to make in this and similar appeals from grants or denials of motions to suppress is a mixed question of law and fact; that is, whethеr the factual findings supported by the record lead to the conclusion, that, as a matter of law, suppression of evidence was or was not necessary. And since the trial court is in the best position to determine the weight and sufficiency of evidence presented, it is appropriate for this Court to apply a clearly erroneous standard to the underlying fаcts found -by the trial court when reviewing appeals from motions to suppress. As such, we explicitly adopt the two-step approach discussed in
Sprague
for reviewing motions to suppress. See
¶ 10. On appeal, defendant claims the evidence should have been suppressed because: (1) defendant’s detention in the customs building prior to Corporal Stringer’s arrival at the border crossing exceeded the scope and purpose of a routine border search, and as a result, (2) inspector Richard unlawfully arrested defendant for a violаtion of Vermont law when Richard detained defendant and his companions for a secondary inspection. To support these claims, defendant suggests that inspector Richard had completed enforcement of customs and immigration laws during the primary inspection of defendant and his companions, and that inspector Richard directed the group to the secondary inspection area because he suspected defendant was driving under the influence of intoxicants. According to defendant, because the customs officer was not a certified law enforcement officer with authority to enforce state law within Vermont, defendant’s detention was unlawful in that it exceeded both the bounds of reasonableness аnd the authority conferred upon a customs officer to detain persons passing through the port of entry.
¶ 11. The Fourth Amendment to the United States Constitution mandates that searches and seizures be reasonable. Reasonableness depends upon all the circumstances surrounding each search and seizure.
United States v. Montoya de Hernandez,
¶ 12. As such, the government has significant latitude to detain persons in a border-crossing context.
United States v. Butler,
¶ 13. However, defendant contends that the government’s power to searсh and detain individuals crossing the border is not unlimited, and that a routine checkpoint stop must be brief and unintrusive, citing
United States v. Rascon-Ortiz,
¶ 14. First, inspector Richard’s testimony that, after the primary inspection and questioning, he had found no evidence of smuggling “at that point” does not establish that inspector Richard had concluded his customs inspection of the group. Defendant and his companiоns indicated that they had made purchases while in Canada. Inspector Richard then directed the group to the secondary inspection area, where they were required to complete proper baggage declarations. While customs agents do not necessarily need a particularized reason to justify a secondary inspection, see
Martinez-Fuerte,
¶ 15. Second, inspector Richard testified that during the secondary inspection he was “reviewing baggage declarations, [аnd] inspecting the car.” The duration of this inspection, which lasted approximately one hour and nine minutes, was a function of Richard’s need to inspect other vehicles arriving from Canada at the primary inspection lane. Moreover, detentions at the border lasting over an hour are not considered extraordinary. See
United States v. Fernandez-Ventura,
¶ 16. Defendant’s second claim on appeal is that his detention in the customs building during the secondary inspection and prior to Corporal Stringer’s arrival constituted an unlawful arrest by inspector Richard for driving under the influence of intoxicants in violation of Vermont criminal law. Defendant argues correctly that customs inspectors have no authority to arrest individuals for violations of Vermont law without prior certification by the executive director of the state’s criminal justice training counsel. See 20 V.S.A. § 2222 (certification providing federal law enforcement officers with *605 power of arrest for Vermont crimes requires completion of a course in Vermont laws and criminal procedure). The record establishes that inspector Richard was not certified to enforce Vermont criminal law in accordance with § 2222.
¶ 17. However, our holding that the secondary inspection was legitimate inexorably leads to the conclusion that defendant was not under arrest. Defendant and his companions were not physically restrained in the customs building and were allowed to move about freely in the area. Although the inspection lasted over an hour, the duration of defendant’s detention was directly related to inspector Richard’s responsibilities as a customs inspector and was reasonable for those purposes. Inspector Richard did retain the driver’s licenses of defendant and his сompanions throughout both primary and secondary inspections, but again, that retention was part of a legitimate border inspection. Cf.
Butler,
¶ 18. Consequеntly, defendant’s second claim on appeal fails. Inspector Richard did not arrest defendant for a violation of 23 V.S.A. § 1201, and as a result, did not violate 20 V.S.A. § 2222. Defendant’s arrest at the port of entry was the result of an independent investigation conducted by a Vermont state police officer exercising his proper authority to enforce Vermont criminal law. Seе
Graves,
Affirmed,.
Note. Justice Morse sat for oral argument but did not participate in this decision.
Notes
We note that the issues presented in
Rascon-Ortiz
arose in the context of immigration checkpoints forty miles from the international border inside the United States.
