(a)
In general— A State, as parens patriae, may bring a civil action on behalf of its residents in an appropriate district court of the United States to enforce the provisions of section 2 of this Act, or to impose the civil penalties authorized by section 3(b)(1)(B), whenever the attorney general of the State has reason to believe that the interests of the residents of the State have been or are being threatened or adversely affected by a violation of this Act or a regulation under this Act, involving a retail sale.
(b)
Notice— The State shall serve written notice to the Federal Trade Commission of any civil action under subsection (a) prior to initiating such civil action. The notice shall include a copy of the complaint to be filed to initiate such civil action, except that if it is not feasible for the State to provide such prior notice, the State shall provide such notice immediately upon instituting such civil action.
(c)
Authority To intervene— Upon receiving the notice required by subsection (b), the Federal Trade Commission may intervene in such civil action and upon intervening—
(1)
be heard on all matters arising in such civil action; and
(2)
file petitions for appeal of a decision in such civil action.
(d)
Construction— For purposes of bringing any civil action under subsection (a), nothing in this section shall prevent the attorney general of a State from exercising the powers conferred on the attorney general by the laws of such State to conduct investigations or to administer oaths or affirmations or to compel the attendance of witnesses or the production of documentary and other evidence.
(e)
Venue; service of process— In a civil action brought under subsection (a)—
(1)
the venue shall be a judicial district in which—
(A)
the defendant operates;
(B)
the defendant was authorized to do business; or
(C)
the defendant in the civil action is found;
(2)
process may be served without regard to the territorial limits of the district or of the State in which the civil action is instituted; and
(3)
a person who participated with the defendant in an alleged violation that is being litigated in the civil action may be joined in the civil action without regard to the residence of the person.
(f)
Limitation on State action while Federal action is pending— If the Federal Trade Commission has instituted a civil action or an administrative action for violation of this Act, no State attorney general, or official or agency of a State, may bring an action under this subsection during the pendency of that action against any defendant named in the complaint of the Federal Trade Commission or the other agency for any violation of this Act alleged in the complaint.
(g)
Enforcement of State Law— Nothing contained in this section shall prohibit an authorized State official from proceeding in State court to enforce a civil or criminal statute of such State.