Is Lying About The Reason For War An Impeachable Offense?

[FS]

I can't wait till Vi- I mean, someone brings up Clinton.

Without immediately stating that Bush should or should not be impeached, I think it's imperative that an official investigation into the reasoning for the war on Iraq is made. Perhaps even an international one - Bush, his administration and his allies (i.e, Blair) have provided fuzzy logic and fuzzy evidence to the world in an attempt to get mass support for it, but there might've been some outright lies in there.