**FILE** Former Montana Gov. Brian Schweitzer (left) speaks with union representatives at the Montana AFL-CIO annual convention in Billings, Mont., on May 10, 2013. Schweitzer, who was endorsed by the AFL-CIO during his two gubernatorial campaigns, is considering a run for the U.S. Senate. (Associated Press)

Photo by: Matt Brown

**FILE** Former Montana Gov. Brian Schweitzer (left) speaks with union representatives at the Montana AFL-CIO annual convention in Billings, Mont., on May 10, 2013. Schweitzer, who was endorsed by the AFL-CIO during his two gubernatorial campaigns, is considering a run for the U.S. Senate. (Associated Press)