39 U.S.C. § 408 : US Code - Section 408: International money-order exchanges

Search 39 U.S.C. § 408 : US Code - Section 408: International money-order exchanges

The Postal Service may make arrangements with other governments,
with which postal conventions are or may be concluded, for the
exchange of sums of money by means of postal orders. It shall fix
limitations on the amount which may be so exchanged and the rates
of exchange.