; or (2) entered into an agreement with the Secretary to modify the terms of all covered leases of the lessee or other person to include limitations on royalty relief based on market prices that are equal to or less than the price thresholds described in clauses (v) through (vii) of section 8(a)(3)(C) of the Outer Continental Shelf Lands Act ( 43 U.S.C. 1337(a)(3)(C) ). (d) Price thresholds for royalty suspension provisions (1) In general The Secretary shall agree to a request by any lessee to amend any lease issued for any Central and Western Gulf of Mexico tract during the period of January 1, 1996, through November 28, 2000, to incorporate price thresholds applicable to royalty suspension provisions, that are equal to or less than the price thresholds described in clauses (v) through (vii) of section 8(a)(3)(C) of the Outer Continental Shelf Lands Act ( 43 U.S.C. 1337(a)(3)(C) ). (2) Requirement (A) In general A lease amended under paragraph (1) shall impose the new or revised price thresholds effective January 1, 2018. (B) Existing lease provisions Existing lease provisions for a lease amended under paragraph (1) shall prevail through December 31, 2017.