, (B) by striking or 4081 (with respect to payments under section 6427) , (C) by striking section 6416(a)(4), 6420, 6421, or 6427, and inserting section 6416(a)(4), 6420, or 6421, . (9) Section 6416(a)(4)(C) is amended by inserting (as such section was in effect on the date of the enactment of the Restoring Fuel Market Freedom Act of 2023 ) after section 6427(i)(4) . (10) Section 6421(d) is amended by striking paragraph (2). (11) Section 6504(8) is amended by striking section 6420, 6421, or 6427 and inserting section 6420 or 6421 . (12) Section 6675(b)(1) is amended by striking section 6416(a)(4), 6420, 6421, or 6427, and inserting section 6416(a)(4), 6420, or 6421, . (13) Section 7210 is amended by striking 6427(j)(2), . (14) Section 7603 is amended by striking 6427(j)(2), . (15) Section 7604 is amended by striking 6427(j)(2), each place such term appears. (16) Section 7605 is amended— (A) by striking , 6427(j)(2) , and (B) by striking section 6420(e)(2), 6421(g)(2), or 6427(j)(2) and inserting section 6420(e)(2) or 6421(g)(2) . (17) Section 7609 is amended by striking 6427(j)(2), . (18) Section 7610 is amended by striking 6427(j)(2), . (19) Section 9502(d) is amended— (A) in paragraph (2), by striking , 6421 (relating to amounts paid in respect of gasoline used for certain nonhighway purposes), or 6427 (relating to fuels not used for taxable purposes) (other than subsection (l)(4) thereof) and inserting or 6421 (relating to amounts paid in respect of gasoline used for certain nonhighway purposes) , and (B) in paragraph (3), by striking (other than payments made by reason of paragraph (4) of section 6427(l)) . (20) Section 9503(c) is amended by striking paragraph (5). (c) Effective date The amendments made by this section shall apply to fuel sold or used after the date of the enactment of this section.