; (2) by redesignating paragraphs (2) through (5) as paragraphs (3) through (6) respectively; (3) by inserting after paragraph (1) the following: (2) Additional limitation (A) In general A State, political subdivision of a State, or political authority of 2 or more States may not enact or enforce a law, regulation, or other provision having the force and effect of law prohibiting employees whose hours of service are subject to regulation by the Secretary under section 31502 from working to the full extent permitted or at such times as permitted under such section, or imposing any additional obligations on motor carriers if such employees work to the full extent or at such times as permitted under such section, including any related activities regulated under part 395 of title 49, Code of Federal Regulations. (B) Statutory construction Nothing in this paragraph shall be construed to limit the provisions of paragraph (1). ; (4) in paragraph (3) (as redesignated) by striking Paragraph (1)— and inserting Paragraphs (1) and (2)— ; and (5) in paragraph (4)(A) (as redesignated) by striking Paragraph (1) and inserting Paragraphs (1) and (2) . (b) Effective date The amendments made by this section shall have the force and effect as if enacted on the date of enactment of the Federal Aviation Administration Authorization Act of 1994 ( Public Law 103–305 ). 599H. National hiring standard of care (a) In general An entity hiring a federally licensed motor carrier shall be deemed to have made the selection of the motor carrier in a reasonable and prudent manner if before tendering a shipment, but not more than 45 days before the pickup of the shipment by the hired motor carrier, that entity verified that the motor carrier, at the time of such verification— (1) is registered with and authorized by the Federal Motor Carrier Safety Administration to operate as a motor carrier or household goods motor carrier, if applicable; (2) has the minimum insurance coverage required by Federal law