; and (B) by striking the first fiscal year and inserting either fiscal year of the biennium of that resolution ; and (4) in subsection (f)(2)(A), by— (A) striking the first fiscal year and inserting either fiscal year of the biennium of that resolution ; and (B) striking the total of fiscal years and inserting the total of all fiscal years covered by the resolution . 106. Revision of biennial budget Section 304 of the Congressional Budget Act of 1974 ( 2 U.S.C. 635 ) is amended to read as follows: 304. Permissible revisions of concurrent resolutions on the budget At any time after the concurrent resolution on the budget has been agreed to pursuant to section 301 and before the end of the biennium, the two Houses may adopt a concurrent resolution that revises or reaffirms the most recently agreed to concurrent resolution on the budget. Any concurrent resolution that revises or reaffirms the most recently agreed to concurrent resolution on the budget shall be considered under the procedures set forth in section 305. . 107. Additional amendments to the Congressional Budget Act of 1974 to effectuate biennial budgeting (a) Enforcement of section 303 Section 303 of the Congressional Budget Act of 1974 ( 2 U.S.C. 634 ) is amended— (1) in subsection (a)— (A) by striking for a fiscal year and inserting for a biennium ; and (B) by striking the first fiscal year covered by that resolution and inserting either fiscal year of that biennium ; (2) in subsection (b)(1)(B), by striking the fiscal year and inserting the biennium ; and (3) in subsection (c)— (A) in paragraph (1)— (i) by striking for a fiscal year and inserting for a biennium ; and (ii) by striking for that year each place it appears and inserting for each year of that biennium