Harvard University officials on Monday announced a “temporary” hiring freeze. In a letter to university staff on Harvard’s website, President Alan Garber and other school officials cited ”substantial financial uncertainties driven by rapidly shifting federal policies” facing universities across the nation.

The hiring pause at one of the nation’s wealthiest schools comes after other schools have also announced efforts to save money.

The university’s pause on faculty and staff hiring comes after the Trump administration pulled $400 million worth of grants and contracts at Columbia University on Friday.