A suspect was arrested on suspicion of arson after a fire last week at a mosque in St. Paul, Minn., at least the fifth such act of vandalism in the state so far this year that has left members of the Muslim community “living in fear,” a state senator said. Jaylani Hussein, the executive director of the Minnesota chapter of the Council on American-Islamic Relations, said at a news conference that the mosque, the Oromo American Tawhid Islamic Center, was left “completely burned” after being set on fire on Wednesday. The building was unoccupied at the time and no injuries...