Biden didn’t mention Amazon, but specifically referenced “workers in Alabama” in the video and a tweet introducing it. He said every worker should have a free and fair choice to join a union, and no employer could take that away. “It’s your right…So make your voice heard,” he said.

“Unions lift up workers, both union and non-union, but especially Black and Brown workers,” Biden said in the video. “There should be no intimidation, no coercion, no threats, no anti-union propaganda. No supervisor should confront employees about their union preferences.”

Amazon, America’s second-biggest private employer, has no unionized labor in the United States, and workers at its fulfillment center in Bessemer, Alabama, would be the first if they vote in favor. Such a decision could encourage workers attempting to organize at other Amazon facilities.