Congressional Oversight of the Antiquities Act

HR 5499, titled "Congressional Oversight of the Antiquities Act," would amend the Antiquities Act to impose time limits on national monument designations. It requires that any national monument established by presidential proclamation under the law expires after six months unless Congress extends it, and if not extended, the land cannot be re-designated as a monument for 25 years. This directly affects federal land managers and future presidents, who would need congressional action to maintain or expand monument boundaries. The bill changes the current process by adding automatic expiration and a long-term moratorium on re-designation, shifting authority to Congress.