United Auto Workers to endorse Biden's reelection bid, source says

The United Auto Workers will endorse President Biden on Wednesday, CBS News confirmed with a source familiar with the endorsement. 

The endorsement is expected but still significant move as the president looks to bolster support heading into General Election season. The union will give their endorsement during the UAW's political convention in Washington, D.C.  

NBC was the first to report the expected endorsement.