Columbia University's interim president resigns

Dr. Katrina Armstrong, Columbia University’s interim president, resigned Friday amid the school's tussle with the Trump administration over federal funding and criticism around its response to pro-Palestinian protests on campus. 

Following the announcement, the school's board appointed Claire Shipman to serve as acting president. Armstrong, the second Columbia leader to step down in less than a year, will return to lead the school's Irving Medical Center, according to a news release.