An executive order from President Trump promoting a federal crackdown on campus antisemitism and his threats to cancel visas of pro-Palestinian international students have put California university leaders and activists on alert after many of the nation's largest and most contentious protests unfolded at their schools.

President Trump signed an executive order Wednesday seeking to fight antisemitism on college campuses and vowing action against “Hamas sympathizers” among student populations.

President Donald Trump on Wednesday signed an executive order to combat antisemitism, including on U.S. college campuses. The order includes many directives, such as working to