Federal officials are quietly terminating the legal residency of some international college students

A crackdown on foreign students is alarming college leaders, who say the Trump administration is using new tactics and vague justifications to push some students out of the country.

College officials worry the new approach will keep foreigners from wanting to study in the U.S.

Students stripped of their entry visas are receiving orders from the Department of Homeland Security to leave the country immediately — a break from past practice that often permitted them to stay and complete their studies.

Some students have been targeted over pro-Palestinian activism or criminal infractions — or even traffic violations. Others have been left wondering how they ran afoul of the government.