1. Short title This Act may be cited as the Merger Enforcement Improvement Act . 2. Premerger notification filing fees Section 605 of Public Law 101–162 ( 15 U.S.C. 18a note) is amended— (1) in subsection (b)— (A) in paragraph (1)— (i) by striking $45,000 and inserting $30,000 ; (ii) by striking $100,000,000 and inserting $161,500,000 ; (iii) by striking 2004 and inserting 2018 ; and (iv) by striking 2003 and inserting 2017 ; (B) in paragraph (2)— (i) by striking $125,000 and inserting $100,000 ; (ii) by striking $100,000,000 and inserting $161,500,000 ; (iii) by striking but less and inserting but is less ; and (iv) by striking and at the end; (C) in paragraph (3)— (i) by striking $280,000 and inserting $250,000 ; and (ii) by striking the period at the end and inserting but is less than $1,000,000,000 (as so adjusted and published); ; and (D) by adding at the end the following: (4) $400,000 if the aggregate total amount determined under section 7A(a)(2) of the Clayton Act ( 15 U.S.C. 18a(a)(2) ) is not less than $1,000,000,000 (as so adjusted and published) but is less than $2,000,000,000 (as so adjusted and published); (5) $800,000 if the aggregate total amount determined under section 7A(a)(2) of the Clayton Act ( 15 U.S.C. 18a(a)(2) ) is not less than $2,000,000,000 (as so adjusted and published) but is less than $5,000,000,000 (as so adjusted and published); and (6) $2,250,000 if the aggregate total amount determined under section 7A(a)(2) of the Clayton Act ( 15 U.S.C. 18a(a)(2) ) is not less than $5,000,000,000 (as so adjusted and published).