On Wednesday, Trump accused Chuck Jones - the president of the United Steelworkers (USW) Local 1999 union which represents manufacturing workers at Carrier's Indiana plants - of doing a "terrible job representing workers."
"If United Steelworkers 1999 was any good, they would have kept those jobs in Indiana. Spend more time working-less time talking. Reduce dues," Trump wrote soon after, in a second tweet.
Prior to Trump's tweets, Jones had criticized the president-elect for misrepresenting the Carrier deal - something that served as a huge symbolic win in Trump's mission to keep manufacturing jobs in the US.
Last week, Trump celebrated keeping 1,100 jobs in Indiana. While technically the figure is correct, of the 1,100 jobs staying in the US, 300 are research and headquarter positions that were never going to move to Mexico. A total of 550 people from the Indianapolis factory and 700 from the nearby Huntington, Indiana plant are still losing their jobs, as Carrier outsources labor to Mexico.
Trump's tweets were swiftly condemned by workers, unions, and supporters.
"A lot of people just think it's crazy we have the president going on Twitter, going after private citizens," T.J. Bray, a Carrier worker who serves as a media representative for USW Local 1999, told Business Insider. "I really don't have any word for it. Hopefully he can be more presidential."
Supporters of Jones and the union took to social media to voice their support.
Chuck Jones was trying to save workers jobs while @realDonaldTrump was buying Chinese steel for his bldgs https://t.co/w9vtbikULP
- Randi Weingarten (@rweingarten) December 8, 2016
This retired steelworker is proud to stand with @steelworkers and Chuck Jones @uswcarrier1999 #unionmember #solidarity forever.
- Kosmic Ray (@Rocket_S57) December 8, 2016
Proud to stand in Solidarity with Chuck Jones and @steelworkers Local 1999 #ImWithChuck
- Jody Mauller (@jmauller) December 8, 2016
"Chuck Jones is a man of integrity who ALWAYS puts the interest of workers first," Indiana AFL-CIO, a coalition of local Indiana unions, wrote on Twitter. "To say otherwise is not only false, it's infuriating."
Chuck is a hero not a scapegoat: you, others know about Carrier because of his, members' tireless work since day 1 to save ALL jobs there. https://t.co/C9fvwajHY7
- United Steelworkers (@steelworkers) December 8, 2016
Dues have helped us file 45+ cases against bad trade; saving jobs in tire, paper, steel, etc. We walk the walk. #imwithchuck #wearewithchuck https://t.co/PlGznkwrTS
- United Steelworkers (@steelworkers) December 8, 2016
We need more local union leaders like #chuckjones and more unions like #usw
- Stephen Lech (@StephenLech) December 8, 2016
This retired union nurse is proud to stand with Chuck Jones who stands up for his fellow union members @steelworkers #ImWithChuck
- Diane RN (@ORDiane) December 8, 2016
Following Trump's tweets, Jones said Wednesday night he has been receiving threatening phone calls. Bray told Business Insider that, as he has been similarly publicly critical of the deal, he has received "hateful," though not threatening, Facebook messages and phone calls.
However, according to Bray, USW Local 1999 is not going to back down following Trump's tweets, continuing to fight to keep all Carrier jobs at both the Indianapolis and Huntington, Illinois plants.
"If I could say to Mr. Trump, 'Come out to the hall, we can have a debate,'" said Bray. "We're not billionaires, but we're hard-working people and we look out for each other."