; 116 Stat. 2135) is amended by inserting after the item relating to section 2112 the following: Sec. 2113. Bidirectional information sharing platform. . 23. Updated retrospective estimate on costs (a) Updated retrospective estimate on costs Not later than 1 year after the date of enactment of this Act, the Secretary shall complete a retrospective estimate of the costs, including costs to the Government, regulated entities, and the public, of carrying out the Chemical Facility Anti-Terrorism Standards Program during the period beginning on the first day of fiscal year 2006 and ending on the last day of fiscal year 2020. (b) Repeal Section 3 of the Protecting and Securing Chemical Facilities from Terrorist Attacks Act of 2014 ( Public Law 113–254 ; 128 Stat. 2917) is repealed. 24. CFATS security harmonization waiver program (a) In general Title XXI of the Homeland Security Act of 2002 ( 6 U.S.C. 621 et seq.), as amended by section 22 of this Act, is amended by adding at the end the following: 2114. Security harmonization waiver program (a) In general Subject to the regulations prescribed under subsection (f), the Secretary shall establish a waiver program to harmonize with the security mandates of other Federal regulatory programs under which an owner or operator of a covered chemical facility may apply to the Secretary to waive all or part of the regulatory requirements under this title. (b) Procedures To grant waiver Not later than 180 days after the date on which an owner or operator of a covered chemical facility submits an application for a waiver under subsection (a), the Secretary shall grant the waiver if the covered chemical facility is subject to the security requirements of another Federal regulatory program that the Secretary determines— (1) have the effect intended by the risk-based performance standards to which the covered chemical facility is subject under this title