Donald Trump complained Thursday that bitter attacks by many establishment Republicans made him feel "in some ways like I'm running against two parties."
"When you have guys like Bill Kristol, who has been calling it wrong on me for two years," the presumptive nominee told Mike Gallagher
on his syndicated radio show. "When you have all these guys."
Kristol, editor of The Weekly Standard, has long been an active member of the "Dump Trump" movement and said last month that he would vote for the billionaire in November.
"It was a rough primary — and they got beat up, but they went after me too," Trump told Gallagher. "We beat them up and now they don't want to endorse.
"It's almost in some ways like I'm running against two parties.
"I'm not sure it matters, because I think we're going to win," he continued. "The people are so fed up with politics and politicians, but I think I'm going to win either way."
Trump's complaints were part of a ferocious 24 hours in which the developer railed against his former Republican primary challengers who have not endorsed him and engaged in a rare public spat with the pro-business U.S. Chamber of Commerce on his trade proposals.
The developer, who has long called for building a wall at the nation's Southern border, joked that Mexican planes were flying overhead while praising the country's leaders on trade in a Thursday speech in New Hampshire.
"Their leaders are so much smarter, sharper," Trump said in Manchester, N.H., The Union-Leader reports.
Then as planes from nearby Manchester-Boston Regional Airport flew over, Trump said:
"In fact, that could be a Mexican plane. They're getting ready to attack."
These spats continued to underscore deep rifts within the GOP as the Republican National Convention approaches in three weeks in Cleveland.
Lacking endorsements from several of his primary rivals, Trump bashed them on Wednesday, calling them "sore losers" for not honoring the pledge all the candidates signed with Republican National Committee Chairman Reince Priebus.
Trump ignited the first debate last August, also in Cleveland, when he said at the outset that he was not willing to support the eventual nominee.
"I have guys out there and if you really think about it, they're really sore losers," he said at a rally Wednesday in Bangor, Maine. "They say it was the roughest campaign ever in the history of Republican politics, but what you do is you go to sleep for a couple of days and you wake up and you honor [the loyalty pledge]."
Texas Sen. Ted Cruz and Ohio Gov. John Kasich are among those who have not supported Trump.
Florida Sen. Marco Rubio, who announced his re-election bid last week, said Tuesday
that "I don't intend to spurn him or denigrate him" — though he would not endorse the billionaire.
In his brawl Wednesday with the U.S. Chamber, Trump slammed the nation's largest business organization for being "controlled totally by various groups of people who don't care about you whatsoever."
He said new trade deals should be negotiated because foreign countries continue to take advantage of America.
"Every country that we do business with us look at us as the stupid people with the penny bank," Trump said in Bangor.
The Washington-based lobbying group has long backed Republican policies.
But on Tuesday it disputed Trump's vocal opposition to trade deals, calling his proposals "dangerous" ideas that would push the United States into another recession.
Trump said the chamber's argument that his policies would cause a trade war were incorrect because the United States was already at a deficit.
"We're already losing the trade war, we lost the trade war," Trump said in Maine. "Nothing can happen worse than is happening now."
Trump has called for renegotiating or scrapping the North American Free Trade Agreement (NAFTA) with Canada and Mexico, calling it a job killer, and reiterated opposition to the pending Trans-Pacific Partnership among the United States and 11 other Pacific Rim countries.
He also lambasted China's trade and currency policies.
The chamber has consistently backed trade deals.
In his New Hampshire speech on Thursday, Trump again trashed NAFTA, which was signed in 1994 under President Bill Clinton, the husband of presumptive Democratic nominee Hillary Clinton.
"Regional job losses have been fantastically poor, fantastically bad, and disgraceful," he told about 200 people invitees to the shuttered Osram Sylvania Inc. plant in Manchester, according to the Union-Leader. "New Hampshire has lost 31 percent of its manufacturing jobs since NAFTA. Just think about that."
The plant, which was used to make lighting products, closed in 2014, and moved some of its 139 jobs to Mexico.
"This legacy is largely due — and you could actually say entirely due — to NAFTA," Trump said. "The real Clinton Global Initiative is their economic plan to ship America's jobs overseas."
The Associated Press and Reuters contributed to this report.
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