"[D]oes Yglesias really believe that the GOP won't try to capitalize on Obama's past history with drugs?"
he asks. Of course I don't (though I doubt the GOP will do it directly, it's more an "independent expenditure" kind of thing to do), and I don't think that's
what I said. What I said was that I don't see anything
racist about inevitable attacks on Barack Obama's drug use.
I think there's every reason to believe that a white candidate whose memoir strongly implied a past history of cocaine use would face attacks for it.
This article available online at:
http://www.theatlantic.com/politics/archive/2007/05/nyhan-strikes-back/40779/