A Palestinian activist who led the disruptive anti-Israel protests at both Columbia University and Barnard College has been arrested by ICE agents at his campus apartment, according to his lawyer. Mahmoud Khalil, a former graduate student who got his undergraduate degree in Beirut and completed his studies at Ivy League Columbia in December, also reportedly faces having his visa revoked and his green card canceled following President Trump’s crackdown on unrest at colleges. He was inside his university-owned apartment a few blocks from campus Saturday night when ICE agents entered the residence and took him into custody, attorney Amy Greer...