Illegal Immigration Apprehensions Arrests Customs and Border Protection Sanctuary Cities DHS Terrorism Prevention Agent Perspectives Immigration Enforcement Resource Allocation Operational Challenges Testimony Drug Trafficking Fentanyl Trafficking Immigration Deportation Policies Morale Operations Trump Administration National Border Patrol Council ICE (Immigration and Customs Enforcement) National Guard Deployment Use of Force Military Involvement Apprehension Rates Encounters Surveillance Methods Loopholes