President Trump signed a proclamation this week suspending visas for new students from overseas who planned to attend Harvard University in the fall -- a move that a judge quickly blocked for the time being .

It's a dramatic escalation of the conflict between the White House and the country's oldest and most elite school.

The White House says it's taking these actions due to national security, crime and civil rights concerns.

The proclamation also calls on Secretary of State Marco Rubio to review visas issued to other foreign nationals at Harvard and whether those students "meet the criteria" laid out in the president's action.

Trump's recent move targets Harvard, but it's just the latest in a string of immigration actions that have placed international students across the

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