12 C.F.R. § 1006.1 – Purpose and definitions.

(a) Purpose. This part, known as Regulation F, is issued by the Bureau of Consumer Financial Protection (Bureau). This subpart establishes procedures and criteria whereby states may apply to the Bureau for exemption of a class of debt collection practices within the applying state from the provisions of the Fair Debt Collection Practices Act (the Act) as provided in section 817 of the Act, 15 U.S.C. 1692o.
(b) Definitions. For purposes of this subpart:
Class of debt collection practices includes one or more such classes of debt collection practices.
State law includes any regulations that implement state law and formal interpretations thereof by a court of competent jurisdiction or duly authorized agency of that state.