Updated

Former Columbia University student Mahmoud Khalil filed a federal lawsuit against the university, alleging it failed to protect Palestinian and pro-Palestinian students from harassment that contributed to his arrest by US Immigration and Customs Enforcement. Khalil, a prominent pro-Palestinian campus activist, spoke to media in New York on September 14 to announce the suit. The lawsuit adds to ongoing controversy over the treatment of pro-Palestinian speech on US campuses and the use of immigration enforcement against student activists, a issue that has drawn wide attention amid the broader Gaza war fallout in the United States.