Lt. Gov. John Walsh defending himself in Helena, Mont., on Jan. 26 against reports that he was reprimanded by the U.S. Army in 2010 for using his position as Montana adjutant general to solicit National Guard memberships to a private organization. Matt Volz/AP hide caption

itoggle caption Matt Volz/AP

Senate Finance Committee Chairman Max Baucus, D-Mont., arrives for a hearing with Treasury Secretary Jacob Lew on Capitol Hill last month. J. Scott Applewhite/AP hide caption

itoggle caption J. Scott Applewhite/AP

Outgoing acting Internal Revenue Service Commissioner Steven Miller. Nicholas Kamm /AFP/Getty Images hide caption

itoggle caption Nicholas Kamm /AFP/Getty Images