; guidelines (1) Study (A) In general The Comptroller General of the United States shall conduct a study of the implementation and efficacy of the requirements of section 102 of the Flood Disaster Protection Act of 1973 ( 42 U.S.C. 4012a ). Such study shall at minimum consider the following questions: (i) How effectively do Federal agencies, regulated lending institutions, and Federal entities for lending regulation implement the requirements of section 102 of the Flood Disaster Protection Act of 1973? (ii) Does the current implementation of Flood Disaster Protection Act of 1973 align with the congressional findings and purposes described in section 2(b) of such Act ( 42 U.S.C. 4002 )? (iii) What, if any, unintended consequences have resulted from the requirements and implementation of section 102 of such Act? (B) Report Not later than the expiration of the 18-month period beginning on the date of the enactment of this Act, the Comptroller General shall submit a report to the Committee on Financial Services of the House of Representatives and the Committee on Banking, Housing, and Urban Affairs of the Senate regarding the findings and conclusions of the study conducted pursuant to this paragraph. (2) Guidelines The Federal entities for lending regulation (as such term is defined in section 3(a) of the Flood Disaster Protection Act of 1973 ( 42 U.S.C. 4003(a) )), in consultation with the Administrator of the Federal Emergency Management Agency, shall jointly update and reissue the rescinded document of the Administrator entitled Mandatory Purchase of Flood Insurance Guidelines (lasted updated on October 29, 2014). The updated document shall incorporate recommendations made by the Comptroller General pursuant to paragraph (1) of this subsection. 509. Satisfaction of mandatory purchase requirement in States requiring flood coverage in all-perils policies Section 102 of the Flood Disaster Protection Act of 1973 ( 42 U.S.C. 4012a ) is amended— (1) in subsection (a), by striking After and inserting Subject to