This week, the chancellor of the City University of New York (CUNY), where I teach, was summoned to testify at a hearing of the U.S. House Committee on Education and the Workforce, alongside top administrators from UC Berkeley and Georgetown. Congressional Republicans once again smeared universities as ideologically dangerous, accusing faculty like me of being extremist and even antisemitic. Their real goals, though, have nothing to do with fostering intellectual diversity or protecting Jewish community members. Instead, they want to use these accusations as a cudgel to control their political opponents and hamper the essential work that universities like mine...