Haven't we been there often before? Must we go through all of it again?
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.
You certainly know where that is from.
More food for thought, plenty of it:
http://bmccreations.com/one_nation/separation.html
Note the links on the left side.