The student, who is from Gambia and was involved in pro-Palestinian activism on campus, was told to report to the immigration agency’s offices. Momodou Taal was among a group of pro-Palestinian activists who shut down a career fair on the Cornell campus last year.Credit ...Seth Wenig/Associated Press The Trump administration moved early Friday to detain an international student at Cornell University who has led protests on its Ithaca, N.Y., campus, in what appeared to be the