Republican Sen. Lindsey Graham, whose own quest for the GOP presidential nomination ended unsuccessfully, on Thursday called Donald Trump a "nut job" who likely will win the party's nod, but lose in November's general election. "He's just generally a loser as a person and a candidate," the South Carolina senator told reporters, adding, "You can't nominate a nut job and lose, and expect it doesn't have consequences." Asked whether he'd endorse the billionaire businessman if nominated, Graham said, "I've got a ticket on the Titanic. So I am like on the team that bought a ticket on the Titanic after...