Border encounters at the U.S.-Mexico border have hit historic highs in recent years, driven by economic and political instability in source countries, post-pandemic mobility, and changes in U.S. processing policies.
Components of "border security" include:
- Physical infrastructure: Wall, sensors, surveillance towers, drones.
- Personnel: Border Patrol, port-of-entry officers, asylum officers.
- Processing: Asylum-officer interviews, immigration courts, detention capacity.
- Policy choices: Parole programs (Title 42, CHNV humanitarian parole), Migrant Protection Protocols ("Remain in Mexico"), metering, expedited removal.
- Source-country / regional cooperation: Mexico, Northern Triangle, Colombia.