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President Donald Trump on Friday re-upped his threat to strip Harvard University of its tax-exempt status, escalating a showdown with the first major college that has defied the administration's efforts to crack down on campus activism.

President Donald Trump says Harvard University will be stripped of its tax-exempt status — redoubling an extraordinary threat that the Ivy League school’s president is pushing back against.

The move marks Trump’s latest effort to handicap an organization whose mission or viewpoints he has disagreed with.

President Donald Trump said Thursday that he would nominate outgoing national security adviser Mike Waltz to be the U.S. ambassador to the United Nations. Waltz, a former congressman from Florida, has been on shaky ground with Trump since March after he inadvertently added a journalist to a private chat on the messaging app Signal with other top national security officials to discuss military strikes in Yemen.

White House national security adviser Mike Waltz is set to depart the administration, according to two people familiar with the matter on Thursday, marking the first major staff shakeup of President Donald Trump’s second term.