Looking at the hysteria caused by the visit of Mahmoud Ahmadinejad to New York and Columbia University, I would like to dare George Bush to reciprocate the visit. And I would like to dare the Iranians to let him. It doesn't matter what Ahmadinejad actually says. What matters is that he is entering the territory of a president who has openly vowed to put him out of business, and has dared to speak, indeed, has dared to give what appears to be his honest opinions. And he has been confronted by protesters and by irate news commentators (such as Scott Pelley). Would Bush allow the same sorts of confrontations? I doubt it. He doesn't even allow himself to confronted by Americans who disagree with him.
One thing the right wing hates in the U.S. is the humanizing of someone they have tried to dehumanize. That's why they have so objected to the Iranian president's visit. But, hey. He's human. I defy you to prove to me otherwise. Now I would like George W. Bush to prove the same thing.