Overview

• U.S. Customs and Border Protection stopped Mario López around 8 p.m. on Sept. 26 at the Matamoros–Brownsville crossing and took him to an inspection area.
• He was questioned for roughly 14 to 15 hours and was escorted back toward Mexico around 11 a.m. on Sept. 27, driving his own vehicle.
• CBP has not provided a public explanation for the prolonged inspection and interrogation.
• Reports circulated that his U.S. visa was revoked, though no official confirmation has been issued.
• Audits of his mayoral administrations in Matamoros logged significant financial observations, and he previously faced a border detention in 2019.