lexipixel - 10:10 pm on Dec 20, 2011 (gmt 0)
on advice from counsel, I decline to answer
IANAL, but that might be considered Contempt of Congress if he's not personally charged with anything and is withholding information. But lets leave that to Congress -- after all that's what we pay them the big bucks for, (and protecting his right to cover up for a corporation is what lobbyists pay bigger bucks for).
If they were more less partisan
You've got one (D) and one (R) leading this inquiry ... Herb Kohl (D-Wis.) and Mike Lee (R-Utah)