It's actually pretty simple and the text is pretty short. You should have a read sometime. There are no exceptions, and it's pretty clear about that.
Now, that isn't to say that our judicial and executive branches of government haven't ruined its enforceability, but that's a story about the resolve of our citizens, not about the first amendment.
"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."
Now, that isn't to say that our judicial and executive branches of government haven't ruined its enforceability, but that's a story about the resolve of our citizens, not about the first amendment.
"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."