NEW YORK — Mahmoud Khalil, the Columbia University protester who became the face of President Trump’s campus crackdown, filed a lawsuit Tuesday accusing administration officials, pro-Israel groups and a conservative think tank of colluding to suppress his constitutional rights.The suit, filed in Manhattan federal court, yokes together a number of different actors: the Heritage Foundation, several top Trump officials and two groups that targeted campus protesters, Canary Mission and Betar.Khalil will seek to convince a judge that the defendants coordinated to a degree that amounted to a conspiracy. His lawyers argue that there was a direct line leading from a...