U.S. Customs and Border Protection (CBP) Tucson Sector Horse Patrol agents wait for the arrival of Department of Homeland Security (DHS) Secretary Kristi Noem in Nogales, Arizona, Feb. 4, 2026. The CBP Tucson Sector covers a total of 262 border miles in Arizona spanning from the New Mexico State line to the Yuma County line. (U.S. Coast Guard photo by Petty Officer 3rd Class Kenneth Wiese)