Lying to congress is a crime even without an oath. Tejada recently pled guilty to just that and he was never placed under oath.
I DO think that it is important to take Gore down several pegs, but this has been by experience:
The “peer reviewed scientist” types will distance themselves from Gore, when Gore screws up, and they will not take any responsibility for his inaccuracies, when Gore is clearly wrong.
I am not sure how successful that approach will be, if we can REALLY deflate the Gore bubble.
I think we should do it, however. There is nobody out there to take Gore's place, if we take Gore down, is there?
Also, if we make Gore a huge target, and we make sure we have our facts straight, it might discourage anyone else from taking up the GW hoax to the extent that Gore has done.