; (B) be enforced in the same manner and to the same extent as any standard promulgated under section 6(b) of the Occupational Safety and Health Act of 1970 ( 29 U.S.C. 655(b) ); and (C) be in effect until the final standard described in subsection (b) becomes effective and enforceable. (4) Failure to promulgate If an interim final standard described in paragraph (1) is not promulgated not later than 1 year of the date of enactment of this Act, the provisions of this title shall be in effect and enforced in the same manner and to the same extent as any standard promulgated under section 6(b) of the Occupational Safety and Health Act ( 29 U.S.C. 655(b) ) until such provisions are superseded in whole by an interim final standard promulgated by the Secretary that meets the requirements of paragraph (1). (b) Final standard (1) Proposed final standard Not later than 2 years after the date of enactment of this Act, the Secretary of Labor shall, pursuant to section 6 of the Occupational Safety and Health Act ( 29 U.S.C. 655 ), promulgate a proposed final standard on workplace violence prevention— (A) for the purposes described in subsection (a)(1)(A); and (B) that shall include, at a minimum, the elements contained in the interim final standard promulgated under subsection (a). (2) Final standard Not later than 42 months after the date of enactment of this Act, the Secretary shall promulgate a final standard on such proposed standard that shall— (A) provide no less protection than any workplace violence standard adopted by a State plan that has been approved by the Secretary under section 18 of the Occupational Safety and Health Act of 1970 ( 29 U.S.C. 667 )