I don't know that that really requires "genius" though. Having a lawyer tell you "hey there's this clause in the recent tax code that might make us a lot of money if we make an interesting demo", and then him saying "ok, lets make that demo" doesn't seem like it takes a 10,000 IQ.

Lying is pretty easy, and I can think of lots of habitual liars that I also think I are very stupid. Without naming anyone specific, think of any politician that you dislike.