On June 19, Republican Louisiana Gov. Jeff Landry signed into law a bill requiring public K-12 schools as well as public universities to prominently display the Ten Commandments in all classrooms. The backlash was swift, with the American Civil Liberties Union (ACLU), Americans United for Separation of Church and State and other groups vowing to fight the law aggressively. The ACLU’s position is that while freedom of religion is most definitely protected by the U.S. Constitution, the First Amendment also states that Congress shall “make no law respecting an establishment of religion” — which, …