The president of America’s most powerful labor organization says Donald TrumpDonald TrumpHuckabee on Trump priorities: ‘A beheading is still worse than a sunburn’ Dan Rather pleads for Trump to pay attention to Portland murders Trudeau says Trump was ’robust,’ 'frank’ with him MORE is deceiving voters on trade.

“He’s a fraud,” AFL-CIO chief Richard Trumka told host Chris Matthews Thursday on MSNBC’s “Hardball.”

“Trump was the chief cheerleader and beneficiary of the trade policies until he discovered out in the hinterlands of Pennsylvania and Ohio this is a powerful, powerful issue. Then he flips over and now is against trade. He’s got the right position right now but nobody believes him.”

Trumka said Trump’s business record undermines the billionaire’s often fiery screeds about the perils of global trade pacts.

“You saw those products — shirts made in Bangladesh, ties made in China, television sets made overseas,” he told Matthews.

“Then he has a course at his university, defunct university, that said, ‘outsourcing is great, outsourcing will create jobs,’ ” Trumka added of the GOP’s presumptive presidential nominee's Trump University.

“He will say or do anything that needs to be said or done to help himself. He says one thing but benefits from the other.”

Trumka admitted Trump has made inroads with the nation’s work force by addressing their economic woes.

“He’s absolutely tapped into the frustration and anger that’s out there,” said Trumka, whose organization has endorsed Democrat Hillary ClintonHillary Rodham ClintonHillary Clinton for 2020 ‘not a good question,’ says Rahm Emanuel Graham: Comey should be held accountable for acting on bad intel Hillary Clinton condemns 'racist abuse' in Portland attack MORE's White House bid. "It’s justifiable frustration and anger.”

Trump earlier Thursday said the Trans-Pacific Partnership (TPP) is worse than the North American Free Trade Agreement (NAFTA).

“That will make NAFTA, in my opinion, look like a baby,” he said during a campaign rally in New Hampshire.

“Trans-Pacific Partnership — it’s over 5,000 pages long — every country that’s in that partnership has studied every word, every comma, every sentence, every paragraph. Our guys probably haven’t even read it. This is the way we do business.”

The AFL-CIO voted earlier this month to endorse Clinton, following the path of other top labor unions like the National Education Association and the Service Employees Union International.

Trump has said that while Clinton has the support of union leadership, he expects to win over rank-and-file members.