Traveling or returning to the U.S. from abroad has become increasingly risky for some — even for people with valid visas and green cards. In recent weeks, international tourists, visa holders and ...

As the Trump administration gets tougher on immigration, those with legal status are becoming increasingly anxious.

Mahmoud Khalil, a Columbia University graduate student, was arrested on Saturday by agents from the U.S. Department of Homeland Security, according to fellow students. Khalil, who is with the ...