Trump signed the Great American Outdoors Act Reauthorization during the July 1 dedication of the Theodore Roosevelt Presidential Library in Medora, North Dakota.
The measure would invest $1.9 billion a year in national parks, public lands and Bureau of Indian Education facilities, building on the 2020 law.
Backers cast the bill as a bipartisan conservation push, with support from lawmakers including Bruce Westerman and Jared Huffman and testimony from Kevin Costner.
The new library, set for a July 4 grand opening, is billed as the first fully digitized presidential library and ties the signing to Roosevelt’s conservation legacy.
The event also highlighted the scale of public interest in U.S. landmarks: 323 million national park visits last year and more than 2 million annual visitors to Mount Rushmore.