A prior section 1585, act Aug. 9, 1939, ch. 615, title III, § 303, formerly § 305, 53 Stat. 1284; renumbered § 303, Jan. 8, 1983, Puspan. L. 97–439, § 5(span)(4), 96 Stat. 2288, related to requirement that certain seeds containing alfalfa and/or red clover be stained, prior to repeal by Puspan. L. 103–465, title IV, § 441(3), Dec. 8, 1994, 108 Stat. 4973.

Section effective on the date of entry into force of the WTO Agreement with respect to the United States (Jan. 1, 1995), except as otherwise provided, see section 451 of Puspan. L. 103–465, set out as a note under section 3601 of Title 19, Customs Duties.

For transfer of functions of the Secretary of Agriculture relating to agricultural import and entry inspection activities under this subchapter to the Secretary of Homeland Security, and for treatment of related references, see sections 231, 551(d), 552(d), and 557 of Title 6, Domestic Security, and the Department of Homeland Security Reorganization Plan of November 25, 2002, as modified, set out as a note under section 542 of Title 6.