41 U.S.C. § 6308

Contracts for transportation of Federal Government securities

When practicable, a contract for transporting bullion, cash, or securities of the Federal Government shall be awarded to the lowest responsible bidder after notice to all parties with means of transportation.

( Pub. L. 111–350, § 3 , Jan. 4, 2011 , 124 Stat. 3806 .)