A South Texas school district is warning parents that U.S. Border Patrol agents may be checking the immigration status of students as they participate in extracurricular activities. On Wednesday, the Alice Independent School District sent out a letter alerting parents that agents may be boarding school buses to question students about their citizenship status.

Mexican troops arrived in Ciudad Juárez and Tijuana this week and will soon patrol 18 cities near the Mexico-U.S. border.

Almost 2,000 extra troops were assigned to Tijuana, just south of California, as part of the 10,000-strong border reinforcement that President Claudia Sheinbaum pledged on Monday under the deal with Trump.

Mexican soldiers are deployed along the U.S.-Mexico border following deal after Trump threatened tariffs against Mexico.