...Whelan must really be focused only on the specter of so-called “transnationalist” judges overturning the will of democratically elected leaders. But this concern is also without foundation. After all, when interpreting constitutional provisions, not a single sitting U.S. Supreme Court
justice has taken the position that international or foreign law constitutes binding authority. As to concerns about customary international law, there are, as Whelan points out, hundreds of pages of academic debate on the precise nuances of how customary international law and federal common law interact, but the key point...