1986—Pub. L. 99–396 amended section generally, expanding definition of “State” to include the Northern Mariana Islands.
1972—Pub. L. 92–318 inserted reference to Virgin Islands and Guam.
Amendment by Pub. L. 92–318 effective after June 30, 1970, see section 506(n) of Pub. L. 92–318, set out as a note under section 326a of this title.