NEW YORK (AP) — Standoffs between pro-Palestinian protesters and U.S. college administrators appear to be coming to a head. Columbia University in New York limited campus access after protesters took over a building early Tuesday. The school promised that they would face expulsion. Police moved to clear an encampment at Yale University in Connecticut. But at Northwestern University, near Chicago, school officials and protesters have reached agreement to allow demonstrations through the end of spring classes. Protesters on campuses nationwide are angry about the Israel-Hamas war and its mounting death toll. Cease-fire negotiations appear to be gaining steam, but it’s unclear if that could inspire protesters to ease their efforts.