Expansion of Military Role at U.S.-Mexico Border
President Trump's expansion of military presence at the U.S.-Mexico border is testing the nearly 150-year-old Posse Comitatus Act, which restricts federal troops from engaging in law enforcement activities on American soil. The military's role has evolved to include detaining and searching trespassers in newly designated national defense areas, bypassing the Act. Concerns arise over the blurring of military and law enforcement roles, potential use of force, and implications on military readiness and recruitment.