(WASHINGTON, D.C.) — The president of Columbia University took a firm stand against antisemitism Wednesday as she parried accusations from Republicans who see the New York campus as a hotbed of bias, but she hedged on whether certain phrases invoked by some supporters of Palestinians rise to harassment. Nemat Shafik had the benefit of hindsight and months of preparation as she faced a congressional hearing on the Ivy League school’s response to antisemitism and conflicts on campus following the Oct.