Aaron Fellmeth, who is a professor of law at Arizona State University College of Law, has posted an insight on International Law and Foreign Laws in U.S. Legislatures on the site of the American Society of International Law.
Beginning in 2010, legislators in half of the U.S. states proposed—and in two states adopted—a series of bills or state constitutional amendments designed to restrict the use of international law and foreign laws by state (and sometimes federal) courts. This Insight will summarize the trend in adopting legislation hostile to international law and foreign laws and briefly discuss its causes and consequences.
The rest of the Insight is available here.