This would be Lt. Governor John Walsh, Democrat, potential candidate for Senator – and possibly the person that would have been picked to temporarily replace the possibly-quitting Max Baucus, although that might be up in the air now. The very short version: Walsh was running for a leadership position in the National Guard Association of the United States (NGAUS), and used his position as a colonel in the Montana NG to coerce his subordinates to join the group and improperly use resources to benefit the NGAUS.
I know, I know: sounds like something that would get investigated, and it was:
The report lists three different “substantiated allegation(s) and conclusion(s)”:
* Walsh improperly endorsed a non-federal entity (NGAUS);
* Walsh improperly used his government position for private gain;
* Walsh improperly used government resources.
But said investigation took place in 2010. Amazing what you can get up to when you have the right people running the federal government, eh?