31 U.S.C. § 3304
Transfers of public money from depositaries
The Secretary of the Treasury may transfer public money in the possession of a depositary—
(1)
to the Treasury; and
(2)
if the Secretary believes the safety of the public money and convenience require it, to another depositary.
( Pub. L. 97–258 , Sept. 13, 1982 , 96 Stat. 949 .)