The United Auto Workers endorsed President Biden on Wednesday as the Democrat incumbent battles against former President Trump for support from key labor groups. 

Biden, who notably stood on the UAW picket line in Michigan back in the fall during their strike against Ford, General Motors, and Stellantis, is to give a keynote speech to the powerful union on Wednesday.

"Joe Biden bet on the American worker. While Donald Trump blamed the American worker. We need to know who's going to sit in the most powerful seat in the world and us win as a united working class. So if our endorsements must be earned, Joe Biden has earned," UAW President Shawn Fain said as the group caps its three-day gathering in Washington, D.C., to map out its political priorities. "UAW family, today, I'm proud to stand up here with your international executive board and announce that the UAW is endorsing Joe Biden for President of the United States!"

"Donald Trump is a scab. Donald Trump is a billionaire and that's who he represents. If Donald Trump ever worked in an auto plant, he wouldn't be a UAW member, he'd be a company man trying to squeeze the American worker," Fain said earlier. "Donald Trump stands against everything we stand for as a union, as a society. When you go back to our core issues wages, retirement, health care and our time, that's what this election's about." 

"In 2019, our members were out there holding the line at GM on a national strike for 40 days. Trump was the sitting president. And I want to show you a picture of what Trump said and what actions he took to help the American auto workers striking at GM when he was president," Fain said. "He said nothing. He did nothing. Not a damn thing, because he doesn't care about the American worker." 

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Fain also denied the race had anything to do with "this bulls*** about age," saying the election is about, "our best at taking back power for the working class." 

In addressing union members earlier, Fain spoke out strongly against the "billionaire class." 

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"The American people stand with us because they understand that our movement is fighting for every last working class American. Everything we do as a union must be about taking back our power as a working class. That's what being UAW really means. It means being strategic, clear and aggressive in our mission to win for workers everywhere," Fain said. 

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"Working class people are hurting. For decades, we've been ignored at best and trampled on at worst. But we are the vast majority of society, right? We have the numbers and we have the votes. When we stand united, we put fear in the hearts of the billionaire class, and they do what they do best. They try to weaken us by dividing us," he said. "They try to divide us by gender. They try to divide us by nationality. They try to divide us by race. They act like how you live your life or where you were born or what color your skin is as a threat to the person next to you on your worksite. They talk about who you love, where are you from, and how you look. The reason they do that is so they don't have to talk about who you work for, where the profits go, and who benefits. That's what unites us. And that unity is where our power comes from." 

This is a developing story. Check back for updates.