It is my understanding that the establishment clause has been interpreted by the courts as a ban not only on the establishment of a state religion, but also on promoting one religion over another, or religion over lack of religion. If so, why does the Supreme Court open with the words “God save this court”, and why are congressional meetings allowed to be opened with prayer?
NOTE: I put this in GQ because I’m looking for a factual answer (as in, the legal reasoning which allows these practices), not a debate over whether these practices should continue.