HE'S NOT A REPUBLICAN:

Donald Trump's private meeting Thursday with Senate Republicans -- designed to foster greater party unity ahead of the national convention in Cleveland -- grew combative as the presumptive presidential nominee admonished three senators who have been critical of his candidacy and predicted they would lose their reelection bids, according to two Republican officials with direct knowledge of the exchanges.

Trump's most tense exchange was with Sen. Jeff Flake (R-Ariz.), who has been vocal in his concerns about the business mogul's candidacy, especially his rhetoric and policies on immigration that the senator argues alienate many Latino voters and others in Arizona.

When Flake stood up and introduced himself, Trump told him, "You've been very critical of me."

"Yes, I'm the other senator from Arizona -- the one who didn't get captured -- and I want to talk to you about statements like that," Flake responded, according to two Republican officials. [...]

Rep. Mark Sanford (R-S.C.) left the meeting worried about Trump's grasp on the basics of the Constitution. At a lunch with reporters afterward, he recalled that the candidate did not seem to know what he was promising to defend.

"I wasn't particularly impressed," said Sanford. "It was the normal stream of consciousness that's long on hyperbole and short on facts. At one point, somebody asked about Article I powers: What will you do to protect them? I think his response was, 'I want to protect Article I, Article II, Article XII,' going down the list. There is no Article XII."

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