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.
Passed by Congress September 25, 1789. Ratified December 15, 1791. The first 10 amendments form the Bill of Rights
Courtesy of constitutioncenter.org