The move to bar Harvard from enrolling foreign students remains a real threat, laying bare how far Donald Trump is willing to push his fight with the university.

The Trump administration abruptly ended Harvard’s ability to enroll international students on Thursday — jeopardizing the legal status of more than one in four students on campus. Less than a day later,

A court has temporarily paused the Trump administration's move to cancel Harvard's student visa program. Harvard filed suit against the Trump administration over the policy, and a judge granted its request for a temporary restraining order to preserve status quo while the case plays out in court.

On Thursday, the Department of Homeland Security had abruptly revoked the university’s ability to enroll foreign students.

The court battle over Harvard's foreign students tests both the legality of the White House's tactics and the judicial system’s ability to rein in alleged government overreach.

Some of Harvard's sports teams would be virtually wiped out by a Trump administration decision that would make the Ivy League school ineligible for international student visas.