In her first public message as Columbia University's acting president, Claire Shipman offered a vague promise to "build on" the "plan outlined to move our community forward" amid the Ivy League school's ongoing battle with the Trump administration. Shipman, a former ABC and CNN journalist, assumed her position on Friday after Katrina Armstrong stepped down as interim president. Shipman said Monday that she plans to "continue to build on the significant progress we've made, and the plan outlined