Yesterday, billionaire businessman and Clinton surrogate Robert Johnson raised the issue of Barack Obama's past drug use. Johnson is a real piece of work. In 2001, when he was falsely insisting that Social Security and the Estate Tax transferred money from African-Americans to whites, I profiled him for TNR. Suffice it to say that, on the list of morally questionable things Johnson has done, his latest comments rank very low.

--Jonathan Chait