Immigration officers arrested Mahmoud Khalil, a Columbia University student leading protests against Israel destruction of Gaza,

President Donald Trump promised last week to round up the "agitators" responsible for "illegal protests" on college campuses. Over the weekend, his administration claimed its first scalp: Mahmoud Khalil, a lead negotiator for pro-Palestinian protest camp at Columbia University.

Pro-Palestinian activist and Columbia University alumnus Mahmoud Khalil was arrested Saturday by immigration authorities, his lawyer confirmed to Axios. The big picture: Immigration and Customs Enforcement agents told Khalil that his student visa had been revoked before his arrest.