As noted by Pete Guither in his excellent 'Bong Hits 4 Jesus' coverage, this passage from Justice Stevens in his dissenting opinion is quite remarkable:

…the current dominant opinion supporting the war on drugs in general, and our antimarijuana laws in particular, is reminiscent of the opinion that supported the nationwide ban on alcohol consumption when I was a student. While alcoholic beverages are now regarded as ordinary articles of commerce, their use was then condemned with the same moral fervor that now supports the war on drugs. The ensuing change in public opinion occurred much more slowly than the relatively rapid shift in Americans’ views on the Vietnam War, and progressed on a state-by-state basis over a period of many years. But just as prohibition in the 1920’s and early 1930’s was secretly questioned by thousands of otherwise law-abiding patrons of bootleggers and speakeasies, today the actions of literally millions of otherwise law-abiding users of marijuana,9 and of the majority of voters in each of the several States that tolerate medicinal uses of the product,10 lead me to wonder whether the fear of disapproval by those in the majority is silencing opponents of the war on drugs. Surely our national experience with alcohol should make us wary of dampening speech suggesting—however inarticulately—that it would be better to tax and regulate marijuana than to persevere in a futile effort to ban its use entirely.

What a profound statement on the importance of publicly debating marijuana laws. Rarely, if ever, has a member of the Court addressed this issue with such candor. It's also noteworthy that his colleagues, Souter and Ginsburg, signed onto this. Stevens's point can't reasonably be characterized as a direct critique of marijuana laws, but he certainly endeavors to legitimize that viewpoint in the marketplace of political ideas.

Although the 'Bong Hits 4 Jesus' banner itself lost today, this case has provided a strong indication of the Court's familiarity with the political debate over our nation's drug laws. What appears on the surface to be a victory in the anti-drug crusade has proven to be more nuanced, which may explain why ONDCP has remained silent today.