Eugene Volokh brings up an old post of his arguing that we should be wary of international law trumping constitutional protections for free speech (International Law and the First Amendment). Good points. We've clearly seen how international treaties can be used to ratchet up copyright time and time again. It would seem this is particularly a danger in realms where public choice theory holds sway. If it is difficult for dispersed interests to organize on a national level, how much more difficult is it to do so on an international level? How much more difficult is it to fight inefficient policies that have been adopted due to governmental failure in particular nation states in the interest of "harmonization"?