President Barack Obama in his most emphatic terms yet disputed the idea that Donald Trump will win this presidential election. “I recognize that there is a deep obsession right now about Mr. Trump,” Obama told attendees of a Democratic Congressional Campaign Committee fundraiser Thursday evening in Santa Monica, California. “And one of you pulled me aside and squeezed me hard and said, ‘Tell me that Mr. Trump is not succeeding you.’ And I said, ‘Mr. Trump is not succeeding me.’” Obama credited Trump and his primary rival, Texas Sen. Ted Cruz, for exposing “some of the nonsense that we’ve been...