NEW YORK (AP) -- U.S. President Donald Trump warned Monday that the arrest and possible deportation of a Palestinian activist who helped lead protests at Columbia University will be the first "of many to come" as his administration cracks down on campus demonstrations against Israel and the war in Gaza.
Mahmoud Khalil, a lawful U.S. resident who was a graduate student at Columbia until December, was detained Saturday by federal immigration agents in New York and flown to an immigration jail in Louisiana.
