Most of the 80,000 federal employees working under the Health and Human Services Department were emailed an offer to leave their job for as much as $25,000 as part of the Trump administration's federal workforce cuts.

Protesters in New York and rights groups expressed outrage Monday over the arrest of a leader of pro-Palestinian demonstrations at Columbia University, as President Donald Trump vowed further crackdowns.

"This is the first arrest of many to come," the president said of Mahmoud Khalil, a green card holder abducted by immigration agents and sent to Louisiana.

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.