WASHINGTON (AP) — A long sliver of federal land along the U.S.-Mexico border that President Donald Trump is turning over to the Department of Defense would be controlled by the Army as part of a base, which could allow troops to detain any trespassers, including migrants, U.S. officials told The Associated Press.

Those areas include the Roosevelt Reservation — a narrow strip of land along the southwest border in the states of Arizona, New Mexico and California — but exclude federal Indian reservations.