President Donald Trump closed much of the activity at the U.S.-Mexico border in January 2025, making it impossible for migrants who arrive at a U.S. port of entry to apply for asylum. Trump’s border policies are likely to make it far more difficult and dangerous for migrants trying to reach the U.S. – but won’t deter all people who want to cross the U.S.-Mexico border without legal authorization.
The number of migrants crossing from Mexico into the U.S. without legal authorization dropped dramatically in 2024. But for a long time, crossing the U.S.-Mexico border by land has been the world’s deadliest migration route.
