; (ii) 5 or more severe repetitive loss structures (as such term is defined in section 1366(h)) for which mitigation activities meeting the standards for approval under section 1366(c)(2)(A) have not been conducted; or (iii) a public facility or a private nonprofit facility (as such terms are as defined in section 102 of the Robert T. Stafford Disaster Relief and Emergency Assistance Act ( 42 U.S.C. 5122 )), that has received assistance for repair, restoration, reconstruction, or replacement under section 406 of the Robert T. Stafford Disaster Relief and Emergency Assistance Act ( 42 U.S.C. 5172 ) in connection with more than one flooding event in the most recent 10-year period. (6) Repetitive-loss structure For purposes of this subsection, the term repetitive loss structure has the meaning given such term in section 1370 ( 42 U.S.C. 4121 ). (7) Reports to congress Not later than the expiration of the 6-year period beginning upon the date of the enactment of this subsection, and not less than every 2 years thereafter, the Administrator shall submit a report to the Congress regarding the progress in implementing plans developed pursuant to paragraph (1)(B). . (b) Regulations The Administrator of the Federal Emergency Management Agency shall issue regulations necessary to carry out subsection (e) of section 1361 of the National Flood Insurance Act of 1968, as added by the amendment made by subsection (a) of this section, not later than the expiration of the 12-month period that begins on the date of the enactment of this Act. 4. Increased cost of compliance (a) In general Section 1304(b) of the National Flood Insurance Act of 1968 ( 42 U.S.C. 4011(b) ) is amended— (1) in paragraph (4), by redesignating subparagraphs (A) through (D) as clauses (i) through (iv), respectively, and adjusting the margins accordingly; (2) by redesignating paragraphs (1) through (4) as subparagraphs (A) through (D), respectively, and adjusting the margins accordingly