; (ii) upon so intervening, to be heard on all matters arising therein; and (iii) to file petitions for appeal. (B) Limitation on State action while Federal action is pending If the Commission or the Attorney General of the United States has instituted a civil action for violation of this Act or a regulation promulgated under this Act (referred to in this subparagraph as the Federal action ), no State attorney general, official, or agency may bring an action under this subsection during the pendency of the Federal action against any defendant named in the complaint in the Federal action for any violation of this Act or such regulation alleged in such complaint. (4) Rule of construction For purposes of bringing a civil action under this subsection, nothing in this Act shall be construed to prevent an attorney general, official, or agency of a State from exercising the powers conferred on the attorney general, official, or agency by the laws of such State to conduct investigations, administer oaths and affirmations, or compel the attendance of witnesses or the production of documentary and other evidence. 4. Regulations Not later than 1 year after the date of the enactment of this Act, the Commission shall promulgate regulations in accordance with section 553 of title 5, United States Code, to implement and enforce this Act. 5. Safe harbor (a) In general The developer of a mobile application may satisfy the requirements of this Act and the regulations promulgated under this Act by adopting and following a code of conduct for consumer data privacy (insofar as such code relates to data collected by a mobile application) that— (1) was developed in a multistakeholder process convened by the National Telecommunications and Information Administration, as described in the document issued by the President on February 23, 2012, entitled Consumer Data Privacy in a Networked World: A Framework for Protecting Privacy and Promoting Innovation in the Global Digital Economy