19 CFR § 201.7 - Investigative authority and initiation of investigations.
(a) Investigative authority. In order to expedite the performance of its functions, the Commission may engage in investigative activities preliminary to and in aid of any authorized investigation, consolidate proceedings before it, and determine the scope and manner of its proceedings;
(b) Initiation of investigations. Investigations may be initiated by the Commission on the Commission's own motion, upon request of the President or the United States Trade Representative, upon resolution of the Committee on Ways and Means of the House of Representatives or the Committee of Finance of the Senate, upon resolution of either branch of Congress, or upon application, petition, complaint, or request of private parties, as required or provided for in the pertinent statute, Presidential proclamation, Executive Order, or in this chapter.