Isra Hirsi, the daughter of Representative Ilhan Omar of Minnesota, is among several Barnard students who have been suspended for participating in a pro-Palestinian encampment at Columbia University. The camp, which includes dozens of tents pitched on the campus’s South Lawn in protest against Israeli actions in Gaza, has created a standoff between administrators and students on the Ivy League campus. Ms. Hirsi posted on social media around 11:30 a.m. on Thursday that she was one of three students suspended so far for participating in the protest, which began on Wednesday, the day the university’s president, Nemat Shafik, appeared before...