49 U.S.C. § 41908
Effect on foreign postal arrangements
This part does not—
(1)
affect an arrangement made by the United States Government with the postal administration of a foreign country related to the transportation of mail by aircraft; or
(2)
impair the authority of the United States Postal Service to make such an arrangement.
( Pub. L. 103–272, § 1(e) , July 5, 1994 , 108 Stat. 1157 , § 41912; renumbered § 41908, Pub. L. 110–405, § 2(b)(7)(B) , Oct. 13, 2008 , 122 Stat. 4289 .)