Section was formerly classified to section 570 of the former Appendix to this title prior to editorial reclassification and renumbering as this section.

A prior section 510 of act Oct. 17, 1940, ch. 888, art. V, 54 Stat. 1189; Puspan. L. 102–12, § 9(23), Mar. 18, 1991, 105 Stat. 41, related to leave of absence for homestead entrymen to perform farm labor, prior to the general amendment of this Act by Puspan. L. 108–189.

Section applicable to any case not final before Dec. 19, 2003, see section 3 of Puspan. L. 108–189, set out as a note under section 3901 of this title.