75 percent of so much of the regular tax liability as exceeds $25,000, over (B) the sum of the credits allowable under subparts A and B of this part. , and (D) by striking subparagraph (B) of paragraph (1) each place it appears in paragraph (2) (as so redesignated) and inserting clauses (i) and (ii) of paragraph (1)(A) . (9) Section 39(a) is amended— (A) by striking or the eligible small business credits in paragraph (3)(A), and (B) by striking paragraph (4). (10) Section 45D(g)(4)(B) is amended by striking or for purposes of section 55 . (11) Section 54(c)(1) is amended to read as follows: (1) regular tax liability (as defined in section 26(b)), over . (12) Section 54A(c)(1)(A) is amended to read as follows: (A) regular tax liability (as defined in section 26(b)), over . (13) Section 148(b)(3) is amended to read as follows: (3) Tax-exempt bonds not treated as investment property The term investment property does not include any tax-exempt bond. . (14) Section 168(k)(2) is amended by striking subparagraph (G). (15) Section 168(k) is amended by striking paragraph (4). (16) Section 168(k)(5) is amended by striking subparagraph (E). (17) Section 168(m)(2)(B)(i) is amended by striking (determined without regard to paragraph (4) thereof) . (18) Section 168(m)(2) is amended by striking subparagraph (D). (19) Section 173 is amended by striking subsection (b). (20) Section 263(c) is amended by striking section 59(e) or 291 and inserting section 291 . (21) Section 263A(c) is amended by striking paragraph (6) and by redesignating paragraph (7) (as amended) as paragraph (6). (22) Section 382(l) is amended by striking paragraph (7) and by redesignating paragraph (8) as paragraph (7). (23) Section 443 is amended by striking subsection (d) and by redesignating subsection (e) as subsection (d). (24) Section 616 is amended by striking subsection (e). (25) Section 617 is amended by striking subsection (i). (26) Section 641(c) is amended— (A) in paragraph (2) by striking subparagraph (B) and by redesignating subparagraphs (C) and