; or (ii) another court of competent jurisdiction. (B) Service of process In an action brought under paragraph (1), process may be served in any district in which— (i) the defendant is an inhabitant, may be found, or transacts business; or (ii) venue is proper under section 1391 of title 28, United States Code. (5) Actions by other State officials (A) In general If an attorney general lacks appropriate jurisdiction to bring a civil action under paragraph (1), any other officer of a State who is authorized by the State to do so may bring a civil action under paragraph (1), subject to the same requirements and limitations that apply under this subsection to civil actions brought by attorneys general. (B) Clarification of authority The authority provided by subparagraph (A) shall supplant, and not supplement, the authorities of State attorneys general under paragraph (1). (C) Savings provision Nothing in this subsection may be construed to prohibit an authorized official of a State from initiating or continuing any proceeding in a court of the State for a violation of any civil or criminal law of the State. (c) Affirmative defense In an action brought under this section to enforce section 2, it shall be an affirmative defense, on which the defendant has the burden of persuasion by a preponderance of the evidence, that the conduct alleged to be a violation of section 2 was nonpretextual and reasonably necessary to— (1) prevent a violation of, or comply with, Federal or State law; (2) protect patient safety