§ 1010.850 Enforcement authority with respect to transportation of currency or monetary instruments.

(a) If a customs officer has reasonable cause to believe that there is a monetary instrument being transported without the filing of the report required by §§ 1010.340 and 1010.360 of this chapter, he may stop and search, without a search warrant, a vehicle, vessel, aircraft, or other conveyance, envelope or other container, or person entering or departing from the United States with respect to which or whom the officer reasonably believes is transporting such instrument.