US HB5279

Establishes the Southern Border Wall National Monument across California, Arizona, New Mexico, and Texas, comprising approximately 289,920 acres to protect the border wall from alteration

Assigns administration of the monument to the Secretary of the Interior through the Bureau of Land Management

Requires memoranda of understanding with federal agencies and Indian Tribes that have jurisdiction over lands where portions of the wall are located

Mandates completion of a general management plan within 3 years of funding availability, with submission to the House Committee on Natural Resources and Senate Committee on Energy and Natural Resources

Defines "southern border wall" as any physical wall constructed under federal law or executive order to serve as a barrier along the U.S.-Mexico border