Secretary of State Marco Rubio said he's revoked the visas of 'lunatics,' but civil-rights experts say the administration is targeting free speech.

The administration has not provided a reason for most cases, but some students have been targeted because of their pro-Palestinian activism.

Federal officials did not give Worcester notification about revoking student visas, Mayor Joseph Petty’s chief of staff said Thursday. Two Worcester universities, Clark University and Worcester Polytechnic Institute (WPI),