Teamsters vice president at large John Palmer savaged O’Brien in his own post, writing that “It is unconscionable for any Labor leader to lend an air of legitimacy to a candidate and a political party, neither of which can be said to have done, or can be expected to do, anything to improve the lives of the workers we are pledged to represent.”

Kamala Harris has received an outpouring of endorsements from Teamsters local unions and regional councils in key states, despite the national union’s decision to not endorse.