Immigration Policy Illegal Immigration Terrorism Immigration Policies Vetting Procedures Military Deployment Southern Border Immigration Military Involvement Threat Assessment Emergency Declarations National Guard Deployment Military Infrastructure Military Logistics Israel-Syria Border Anti-Drone Measures Defense Spending Cartel Violence Crimean Peninsula Israel Border Fence-Breaking Customs and Border Protection Border Crossings Legislative Measures Chinese Migrants Migrant Encounters Border Bill Drug Trafficking Illegal Migration Threats Smuggling Networks Border Guard Forces Drone Incursions Armed Conflicts Security Forces Safety Precautions Russian-Ukrainian Border Border Crisis U.S. Border Patrol Border Patrol Criminal Background Checks Lebanese Border U.S. Southern Border Unauthorized Border Crossings Military Presence ICE Defensive Measures Military Bases U. S.-Mexico Border Crisis Maritime Borders Immigration Enforcement Vulnerabilities Military Operations Russian Response Cross-Border Attacks LAC Management