US President Donald Trump on Sunday (May 25) said his government wants to reduce the number of foreign students at Harvard University and wants the school to provide the names of those foreign students.

Speaking to reporters at Morristown airport, Trump said no foreign government contributes money to Harvard and said grants from the US government would need to be reconsidered.

"Well, look, part of the problem with Harvard is that there are about 31%, almost 31% of foreigners coming to Harvard. We give them billions of dollars, which is ridiculous. We do grants which we're probably not going to be doing much grants anymore to Harvard, but they're at 31%. But they refuse to tell us who the people are. We want to know the people are,” he said.

“Now, a lot of the foreign students we wouldn't have a problem with, I'm not going to have a problem with foreign students, but it shouldn't be 31% is too much. Because we have Americans that want to go there and other places and they can't go there because you have 31% foreign.”

Trump's administration revoked Harvard University's ability to enroll foreign students last week.

The decision marked a significant escalation of the Trump administration's campaign against the elite Ivy League university in Cambridge, Massachusetts.

Harvard called it a "blatant violation" of the U.S. Constitution and other federal laws.

A U.S. judge temporarily blocked the administration's order.