Texas State Troopers arrive in a Dilley I.S.D. school bus before dispersing a crowd protesting Immigration and Customs Enforcement at the South Texas Family Residential Center on January 28, 2026 in Dilley, Texas. (Joel Angel Juarez/Getty Images) (WASHINGTON) — Rep. Joaquin Castro, along with more than 110 Democratic members of Congress, has sent a letter to Secretary of Homeland Security Markwayne Mullin urging the shutdown of the Dilley Immigr…