with some breaking news. the president of the university of pennsylvania has resigned. liz mcgill, facing calls to step down over her testimony on capitol hill this week. republicans have accused her of downplaying campus antisemitism in this exchange with congresswoman, elise stefanik. specifically calling for the genocide of jews, does that constitute bullying, or harassment? if it is direct, and severe it is harassment. if it becomes a means beautiful conduct it s harassment. in the chair of the house education committee, they applauded mcgill s announcement. this is how she remains on the faculty until a replacement is found. the statement reading, in part, quote, it has been my privilege to serve as president of this remarkable institution. nbc joins me now with the latest. george? alicia, the reaction on campus is a mixed bag right now. some students getting word that liz has stepped down, and also stepping, down tonight, the chair of the board of trustees, scot