Pub. L. 110–234 and Pub. L. 110–246 enacted identical sections. Pub. L. 110–234 was repealed by section 4(a) of Pub. L. 110–246.

A prior section 8101, Pub. L. 107–171, title IX, § 9001, May 13, 2002, 116 Stat. 475; Pub. L. 109–58, title IX, § 943(a)(1), Aug. 8, 2005, 119 Stat. 880, contained definitions for this chapter, prior to the general amendment of this chapter by Pub. L. 110–246.

Enactment of this chapter and repeal of Pub. L. 110–234 by Pub. L. 110–246 effective May 22, 2008, the date of enactment of Pub. L. 110–234, see section 4 of Pub. L. 110–246, set out as a note under section 8701 of this title.

Pub. L. 108–199, div. A, title VII, § 778(a), Jan. 23, 2004, 118 Stat. 41, provided that: “This section [enacting section 8109 of this title] may be cited as the ‘Sun Grant Research Initiative Act of 2003’.”

Pub. L. 106–224, title III, June 20, 2000, 114 Stat. 428; as amended by Pub. L. 107–171, title IX, § 9008, May 13, 2002, 116 Stat. 483; Pub. L. 108–148, title II, § 201, Dec. 3, 2003, 117 Stat. 1901; Pub. L. 109–58, title IX, § 941, Aug. 8, 2005, 119 Stat. 873, known as the Biomass Research and Development Act of 2000, and formerly set out as a note under this section, provided temporary authority for the Secretaries of Agriculture and Energy to promote biomass research and development. As amended by Pub. L. 109–58, the program became permanent, and title III of Pub. L. 106–224 was transferred to chapter 112 (§ 8601 et seq.) of this title. Subsequently, title III of Pub. L. 106–224 was repealed by Pub. L. 110–246, title IX, § 9001(b), June 18, 2008, 122 Stat. 2095.