New York CNN — Hedge fund billionaire Bill Ackman is calling for the presidents of Harvard, MIT and the University of Pennsylvania to “resign in disgrace,” citing disgust with their testimony at a House hearing Tuesday on antisemitism on campus. “Throughout the hearing, the three behaved like hostile witnesses,” Ackman wrote in a post on X, “exhibiting a profound disdain for the Congress with their smiles and smirks, and their outright refusal to answer basic questions with a yes or no answer.” Ackman, a Harvard graduate who has been a vocal critic of how universities have addressed antisemitism, took particular...