President Donald Trump has signed a multitude of executive orders that have universities across the nation in a panic.

The step by Harvard, which has an endowment of more than $50 billion, illustrates the gravity of the situation facing higher education.

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.