7-Mile Border Wall Expansion Begins in Arizona

Arizona shares an approximately 370-mile border with Mexico.

Secretary of Homeland Security Kristi Noem (2nd R) listens during a tour along the Nogales border wall at the Mariposa Port of Entry in Nogales, Ariz., on March 15, 2025. Alex Brandon/Pool/AFP via Getty Images

Construction of an additional seven miles of the southern border wall in Arizona began on Sunday.

Homeland Security Secretary Kristi Noem announced the expansion of the unfinished wall in a video statement on X.