Federation President Richard L. Trumka said in a letter to senators Tuesday that Andrew Puzder's nomination "betrays the promise (Trump) made to put working people first."
The Latest: Education nomination advances to full Senate →
"We can't be fooled. Trump isn't interested in solving the problems he yells and swears about," he said. "He delivers punch lines, but there's nothing funny about them."
Donald Trump divides union leaders, rank-and-file members →