1. Short title This Act may be cited as the Investing In America: Unlocking the Harbor Maintenance Trust Fund Act . 2. Use of Harbor Maintenance Trust Fund to support navigation (a) Availability of amounts Section 210 of the Water Resources Development Act of 1986 ( 33 U.S.C. 2238 ) is amended— (1) in the section heading by striking Authorization of appropriations and inserting Funding for navigation ; and (2) in subsection (a) by striking There are authorized to be appropriated and all that follows before paragraph (1) and inserting Amounts made available from the Harbor Maintenance Trust Fund in accordance with section 9505(d) of the Internal Revenue Code of 1986 shall be used to pay— . (b) Amendment to trust fund code Section 9505(c) of the Internal Revenue Code of 1986 is amended— (1) in the matter preceding paragraph (1) by striking , as provided by appropriation Acts, and inserting , in accordance with subsection (d), ; and (2) by adding at the end the following: (d) Availability of amounts Beginning on October 1, 2017, there shall be available from the Harbor Maintenance Trust Fund for making expenditures under subsection (c)— (1) without further appropriation, an amount equivalent to the taxes received in the Treasury under section 4461 for the previous fiscal year, as determined by the Secretary of the Treasury; and (2) such additional amounts as provided by appropriations Acts. . (c) Estimate of harbor maintenance needs Section 1537(2) of MAP–21 ( 33 U.S.C. 2238a(2) ) is amended by striking amount of appropriations and inserting expenditures . 3. Budgetary treatment of Harbor Maintenance Trust Fund Notwithstanding any other provision of law, the receipts and disbursements of the Harbor Maintenance Trust Fund— (1) shall not be counted as new budget authority, outlays, receipts, or deficit or surplus for purposes of— (A) the budget of the United States Government as submitted by the President; (B) the congressional budget (including allocations of budget authority and outlays provided therein)