; and (ii) upon intervening— (I) be heard on all matters arising in the civil action; and (II) appeal a decision in the civil action. (C) 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 section 2(a) (referred to in this subparagraph as the Federal action ), no State attorney general, official, or agency may bring an action under paragraph (1) during the pendency of the Federal action against any defendant named in the complaint in the Federal action for any violation of such section alleged in such complaint. (3) Rule of construction Nothing in this subsection may 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 the State to conduct investigations, to administer oaths or affirmations, or to compel the attendance of witnesses or the production of documentary or other evidence. 4. One national standard (a) In general A State, or political subdivision of a State, may not maintain, enforce, prescribe, or continue in effect any law, rule, regulation, requirement, standard, or other provision having the force and effect of law of the State, or political subdivision of the State, that prohibits a covered provider from advertising, displaying, marketing, or otherwise offering, or otherwise affects the manner in which a covered provider may advertise, display, market, or otherwise offer, for sale in interstate commerce, including through a direct offering, third-party distribution, or metasearch referral, a price of a reservation for a place of short-term lodging that does not include each mandatory fee. (b) Rule of construction This section may not be construed to— (1) preempt any law of a State or political subdivision of a State relating to contracts or torts