The Trump administration’s now-paused revocation of Harvard University’s ability to enroll international students raises significant questions about how a ban would impact the school community and its academic research.

The Administration’s move is the latest escalation in its attack on elite universities across the U.S., with heavy penalties levied on Harvard, including a threat to revoke the university’s tax-exempt status. Those penalties have only grown more severe as Harvard has refused to capitulate to the Administration’s demands.