Two years before the bombings that Ahmad Khan Rahami is suspected of carrying out in New York and New Jersey, his father told the police that his son was a terrorist, prompting a review by federal agents, according to two law enforcement officials. The father, Mohammad Rahami, in a brief interview on Tuesday, said that at the time he told agents from the Federal Bureau of Investigation about his concern, his son had just had a fight with another of his sons and stabbed the man, leading to a criminal investigation. “Two years ago I go to the F.B.I. because...