It’s legal because of the first Amendment of the US Constitution, which is held in higher regard than any religious text even. Congress shall make no law r

It’s legal because of the first Amendment of the US Constitution, which is held in higher regard than any religious text even. Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the government for a redress of grievances.