Addressing reporters at a breakfast on Monday, Paul Manafort, Mr. Trump’s de facto campaign manager, accused Mr. Kasich of acting “petulant” for refusing to support Mr. Trump following the governor’s defeat in the Republicans’ presidential nominating process.
“He’s embarrassing his party in Ohio,” Mr. Manafort said of Mr. Kasich, calling the governor’s chief political strategist the culprit behind Mr. Kasich’s strategy of not endorsing Mr. Trump. “Negotiations broke down because John Weaver thinks that John Kasich will have a better chance to be president by not supporting Donald Trump.”
Trump won this thing fair and square. It's his. They didn't try hard enough to take down his candidacy and now they're stuck with it.