Prohibits federal funds from being used to provide housing for people without lawful immigration status on federally managed lands (except for custody/detention facilities) and expands Department of Homeland Security (DHS) access and authorities on federal lands near the northern and southern borders. It requires federal land managers to build and maintain navigable roads, inventory and use unauthorized roads and trails made by crossers, permit DHS tactical infrastructure and technology (including in some wilderness areas), and enter cooperative agreements to carry out these activities.

Also creates a Border Fuels Management Initiative to reduce hazardous fuels and support Border Patrol operations, mandates inventories and damage reports (including wildfire and grazing impacts) to Congress, and requires several cooperative agreements and implementation of prior memoranda of understanding within set time frames.