And I think the left were insane some years back for claiming Dubya was behind the 9/11 attacks*.

Most GOP think Obama was born in Kenya

Among Republicans only, a 42% Birther plurality say he was not born here, 37% say he was, and 22% are undecided.

http://tpmdc.talkingpointsmemo.com/2009/09/poll-begs-question-is-extremism-mainstream.php?ref=fpa

*=His administration screwed up on the economy, deficit, Iraq, Iran, Afghanistan, Katrina, but they got that right?