50 USC 3040a
50 USC 3040a
§ 3040a - Prohibition on collection and maintenance of information of United States persons based on first amendment-protected activities
CHAPTER 44— NATIONAL SECURITY › SUBCHAPTER I— COORDINATION FOR NATIONAL SECURITY
No element of the intelligence community may collect or maintain information concerning a United States person (as defined in section 3039 of this title) solely for the purpose of monitoring an activity protected by the first amendment to the Constitution of the United States.