This reminds me of something I meant to ask: What solid empirical evidence do we actually have about modern-day corruption in unions? How does it compare to, say, corruption in the modern-day chamber of commerce? The closest thing to such evidence I'm recently seeing is endless TV replays of On The Waterfront, a Marlon-Brando movie from the 1950s.
Good movie! The Department of Labor keeps statistics on evidence, indictments and prosecutions, I believe.
1. Go to their website, scroll down to the "O" section...
2, Click on "Office of Labor-Management Standards (OLMS)...
3. Click on "About OLMS"...
4. Click on "Annual Reports".
The last available report is for 2009. An FOIA has been filed for the 2010 report, but I think the explanation was that it hasn't been compiled yet.
Let me know if this isn't what you were looking for.