They did do some Biden photo ops, yes. I personally don’t think that is particularly valuable for the union itself.
It’s kind of like politicians showing up to a protest looking to get clout despite doing nothing to organize it. They get to claim credit while doing literally nothing.
Liberal union staff always say that Dem politicians help. It’s part of their false ideology and one if the main things we need to combat if we are to build unions that aren’t used to kill us.