The "Joshua Tree National Park Expansion Act" proposes to expand the boundary of Joshua Tree National Park by approximately 20,149 acres . This expansion involves transferring administrative jurisdiction of the newly added land from the Bureau of Land Management to the National Park Service. The bill authorizes the Secretary of the Interior to acquire land within the expanded park boundary through methods such as donation, purchase from willing sellers, exchange, or transfer, with specific limitations for State-owned property. Additionally, the legislation mandates the redesignation of the Cottonwood Visitor Center at Joshua Tree National Park. This facility, or any future successor, will be officially named the "Dianne Feinstein Visitor Center."