District of Columbia Code Division I. Government of District. § 5-333.05. Authorization for investigations involving First Amendment activities.

(a) The MPD may conduct a criminal investigation that involves the First Amendment activities of persons, groups, or organizations only when there is reasonable suspicion to believe that the persons, groups, or organizations are planning or engaged in criminal activity, and the First Amendment activities are relevant to the criminal investigation.

(b) Except as provided in subsection (e) of this section, a MPD member may undertake an investigation under this section only after receiving prior written authorization from the Commander, Office of the Superintendent of Detectives, or such other MPD commander of similar rank designated by MPD regulations. No MPD member may conduct an investigation involving First Amendment activities without the authorization required by this section.

(c) To obtain authorization for an investigation under this section, a MPD member shall submit a memorandum to the Commander, Office of Superintendent of Detectives, or such other MPD commander of similar rank as designated by MPD regulations:

(e) If there is an immediate threat of criminal activity, an investigation under this section may begin before a memorandum is prepared and approved; provided, that written approval must be obtained within 24 hours from the Chief of Police or his designee.

(f) An investigation involving First Amendment activities shall be terminated when logical leads have been exhausted and no legitimate law enforcement purpose justifies its continuance.