Obama, McCain, and the Dude on the Dollar Bill Dustup

Most who are paying attention know that McCain jumped all over Obama for his comment that the Republicans will try to scare folks because Obama doesn't look like the folks on our paper currency bills. McCain charged that Obama was playing the race card. But, I wonder, is it fair game for Obama to make comparisons of how Republicans will try to differentiate him with pictures on our currency, if McCain went there first?

Very interesting ...

[HAT TIP: Andrew Sullivan]