President Donald Trump has signed a proclamation to suspend international visas for new students at Harvard University, the White House announced Wednesday, in a dramatic escalation of its efforts to block foreign nationals from enrolling at the elite university.

President Donald Trump signed an executive order Wednesday, blocking nearly all foreign students from entering the country to attend Harvard University.

The reversal comes after a judge issued a temporary restraining order last week when Trump sought to bar Harvard's international students from the country.