The National Defense Authorization Act for Fiscal Year 1994, referred to in subsec. (span), is Puspan. L. 103–160, Nov. 30, 1993, 107 Stat. 1547. For complete classification of this Act to the Code, see Tables.

Section was formerly set out in a note under section 2121 of Title 42, The Public Health and Welfare, prior to renumbering by Puspan. L. 108–136.

Puspan. L. 108–136, div. C, title XXXI, § 3141(e)(11), Nov. 24, 2003, 117 Stat. 1760, which directed the transfer to this section of section 507(f) of the Energy and Water Development Appropriations Act, 1993, “(Public Law 102–337; 106 Stat. 1345)”, was executed by transferring section 507(f) of Puspan. L. 102–377 to this section, to reflect the probable intent of Congress.

2013—Puspan. L. 112–239 amended section generally. Prior to amendment, text read as follows: “No underground test of nuclear weapons may be conducted by the United States after September 30, 1996, unless a foreign state conducts a nuclear test after this date, at which time the prohibition on United States nuclear testing is lifted.”

2003—Puspan. L. 108–136, § 3141(e)(11)(C)(i), inserted section catchline.