"I believe the explanation lies in the Obama administration’s fondness for transnationalism, a doctrine of post-sovereign globalism in which America is seen as owing its principal allegiance to the international legal order rather than to our own Constitution and national interests. "Recall that the president chose to install former Yale Law School dean Harold Koh as his State Department’s legal adviser. Koh is the country’s leading proponent of transnationalism. He is now a major player in the administration’s deliberations over international law and cooperation. Naturally, membership in the International Criminal Court, which the United States has resisted joining, is high...