Sen. Bernie Sanders Bernie SandersButtigieg stands in as Pence for Harris's debate practice Bernie Sanders warns of 'nightmare scenario' if Trump refuses election results Harris joins women's voter mobilization event also featuring Pelosi, Gloria Steinem, Jane Fonda MORE (I-Vt.) called the president of a local union representing Carrier workers Thursday to congratulate him on becoming “the most famous labor leader in America,” CBS News reported.

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Sanders told Chuck Jones he will keep President-elect Donald Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE accountable in keeping Carrier manufacturing jobs in the U.S.

“We are going to remind Mr. Trump of what he said,” Sanders said. “But, believe me, we are going to do everything we can to make sure he follows through on the promises he made to the people of Indiana and to the people in America.”

Trump had promised to save the jobs of 1,350 workers at a Carrier plant in Indiana, which were originally planned to be moved to Mexico. In a Dec. 1 meeting, Trump said 550 of the jobs would be saved.

Earlier this week, Jones said Trump "lied his ass off" about the deal. Trump retaliated with a tweet:

Chuck Jones, who is President of United Steelworkers 1999, has done a terrible job representing workers. No wonder companies flee country! — Donald J. Trump (@realDonaldTrump) December 8, 2016

“Well you know, if I did something to piss off President-elect Trump, so be it,” Jones told Sanders.

Sanders called Jones and Carrier employees a "symbol of outsourcing in America."

“The world has focused on you guys and we’ve got to be effective in fighting back," Sanders said.

Jones thanked Sanders for the call and his support.

“You know, we didn’t pick the fight. We’re in the fight, and we’re going to keep on fighting all the way [for] all these jobs leaving the country, and it’s gotta stop.”