According to President Trump, Chuck Schumer is “not Jewish anymore.” Nor are Jewish Americans who vote for the Democratic Party. Nor are Jewish college students who oppose the Israeli government’s genocide in Gaza. In making these claims, Trump and his administration are attempting to reshape the contours of Jewish identity, dividing “real Jews" and "good Jews" from "Un-Jews" and "bad Jews." And they are increasingly using law and economic power to materialize these distinctions.