# § 3999. Regulations
The Secretary of the Interior may issue regulations necessary to carry out this subchapter (other than sections 3991, 4000, and 4001 of this title).
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**Source Credit**: (Oct. 17, 1940, ch. 888, title V, § 509, as added Pub. L. 108–189, § 1, Dec. 19, 2003, 117 Stat. 2858.)
## Editorial Notes
### Codification
Section was formerly classified to section 569 of the former Appendix to this title prior to editorial reclassification and renumbering as this section.
### Prior Provisions
A prior section 509 of , art. V, ; , , related to distribution of information concerning benefits of tax and public lands provisions and forms, prior to the general amendment of this Act by . See .
## Statutory Notes and Related Subsidiaries
### Effective Date
Section applicable to any case not final before , see , set out as a note under .