(a) Applicability.—This subchapter shall apply with respect to—
subject to any changes the Postal Regulatory Commission may make under section 3642.
A prior section 3621, Pub. L. 91–375, Aug. 12, 1970, 84 Stat. 760, authorized the Governors to fix rates and classes, prior to repeal by Pub. L. 109–435, title II, § 201(a), Dec. 20, 2006, 120 Stat. 3200.
Pub. L. 103–123, title VII, § 704(b)(2), Oct. 28, 1993, 107 Stat. 1270, provided that: