I haven’t heard about that, More info?
http://www.uzitalk.com/forums/archive/index.php/t-17961.html
In which we find (search on Clinton in the text):
"Anyways, I had to sell it shortly after because Bill Clinton was an idiot and made this shotgun a class 3 item and I was not 21 at the time."
Other details are probably out there, somewhere.