Between classes, when throngs of students stream into and out of Columbia University ’s campus, the security lines can back up like a TSA checkpoint. There’s a switch-back path of metal fencing that leads into a white tent, where two sets of guards check and then swipe campus ID cards before letting students in and out.

Columbia University says it has expelled or suspended some students who took over a campus building during pro-Palestinian protests last spring and temporarily revoked the diplomas of some students who have since graduated.

The U.S. Justice Department said on Friday it was looking into what it said were possible violations of terrorism laws during protests over the Gaza war at Columbia University, putting fresh pressure on the epicenter of last year's nationwide anti-Israel activism.

A Palestinian woman was arrested in New Jersey, while another activist from India chose to "self-deport", US officials say.

Fox News senior correspondent Eric Shawn reports on the fallout from continued anti-Israel protests at Columbia University on ‘Special Report.’

The U.S. Justice Department is examining whether student protests at Columbia University over the Gaza war violated federal terrorism laws, Deputy Attorney General Todd Blanche said on Friday.