Labor for Bernie Sanders has released a list of signatories to their open letter calling upon their unions and the AFL-CIO to endorse Bernie Sanders. It is truly impressive. Over 1100 union members from all over the United States, and from several dozen different unions have signed on.
When you lay it all out on a map, it's quite impressive. I can't embed a Google Map, so yo give you an idea, I took a screen shot. If you want to be able to zoom in, zoom out, and click on the markers to see what nationals and union locals are represented, you can got to the Google Map here.
If you're a union member, please consider signing up. Labor for Bernie Sanders 2016 provides a full toolkit including sample local and CLC resolutions, as well as a petition you can collect signatures for to demonstrate support in your local or CLC for a resolution in support of endorsing Sen. Sanders.
This is one of the few things that those of us not living in Iowa or New Hampshire can personally due that will have a big impact. Each union local or CLC resolution is a new story that demonstrates that working Americans can #feeltheBern, and collectively they can help sway national/international unions and the AFL-CIO to come out and endorse Bernie.