President Donald Trump touted the arrest of Mahmoud Khalil, the Columbia University graduate student and Palestinian activist detained by Immigration and Customs Enforcement over the weekend — signaling a larger campaign to punish anti-Israel protesters on college campuses.

A federal court petition demanding Mahmoud Khalil’s release provides details of the Columbia University activist’s arrest. Trump says more arrests are to come.

A prominent Palestinian activist who helped lead last spring’s protests at Columbia University is facing deportation following his arrest by federal immigration agents over the weekend.