US Secretary of State Marco Rubio vowed Tuesday to keep stripping visas from students in a fiery showdown with rival Democrats who accused him of trampling on free speech of Israel critics.

A US judge ordered the release from custody on Wednesday of an Indian researcher at a top American university who is facing possible deportation for alleged Hamas ties.

A US judge on Friday ordered the release of a Turkish student detained by federal agents as part of President Donald Trump's crackdown on pro-Palestinian campus activism.

US immigration authorities on Monday arrested another Columbia University student who participated in pro-Palestinian campus protests, detaining him as he attended an interview to become an American citizen.

An immigration judge ruled Friday that a pro-Palestinian student protester, a US permanent resident detained by the Trump administration, can be deported, his lawyer said.