President Donald Trump rubbed salt on the wound of his recent Harvard student ban by claiming a “lot of them” can’t even do basic math. His petty comment came a day after he moved to bar foreign students from enrollment as part of his ongoing feud with the Ivy League school.

Harvard University filed a lawsuit seeking to reverse the Trump administration's ban on the private school enrolling international students. The suit came a day after the Department of Homeland Security revoked Harvard's ability to enroll foreign students under the F-1 visa program at the behest of Secretary Kristi Noem.

A federal judge has blocked a Trump administration decision to revoke Harvard University’s ability to enroll international students.