Illegal Border Crossings 2025 By Month. Individuals from more than 160 countries have been apprehended crossing the border illegally, including aliens from countries on the state sponsors of terrorism list. Start with the number of undocumented, or illegal, migrants crossing the border.

Individuals from more than 160 countries have been apprehended crossing the border illegally, including aliens from countries on the state sponsors of terrorism list. Border patrol is on pace to record fewer than 50,000 apprehensions of migrants crossing the southern border unlawfully this month.