Mojave National Preserve Boundary Adjustment Act

This bill adjusts the boundary of California's Mojave National Preserve to include approximately 20,920 acres of land previously designated as Castle Mountains National Monument (established by Presidential Proclamation 9394 in 2016). The added land, located adjacent to the preserve, will be administered as part of the Mojave National Preserve under the National Park Service. The bill does not change land use or management policies but formally integrates this area into the existing preserve boundary. This directly affects the management of federal lands in the Mojave Desert region, consolidating two protected areas under a single administrative unit.