; and (2) by inserting after subsection (b) the following: (c) Investment of amounts (1) In general On request of the Secretary, the Secretary of the Treasury may invest any portion of the Fund (including amounts in the Fund that are appropriated but not disbursed) that is not, as determined by the Secretary, required to meet the current needs of the Fund, but not to exceed such amounts as are necessary to generate $15,000,000 in investment income per year under paragraph (2). (2) Requirement An investment of amounts made available under paragraph (1) shall be made by the Secretary of the Treasury in a public debt security— (A) with a maturity suitable for the authorized uses described in subsection (c)(2) of section 401 of the Federal Land Policy and Management Act of 1976 ( 43 U.S.C. 1751 ); and (B) bearing interest at a rate determined by the Secretary of the Treasury, taking into consideration current market yields on outstanding marketable obligations of the United States of comparable maturity. (3) Range betterment account The income on investments of the Fund under this subsection shall be credited to, and used for purposes of an account established in the Treasury, to be known as the range betterment account , to be used in accordance with subsection (c) of section 401 of the Federal Land Policy and Management Act of 1976 ( 43 U.S.C. 1751 ). . (b) Range betterment account Section 401 of the Federal Land Policy and Management Act of 1976 ( 43 U.S.C. 1751 ) is amended by adding at the end the following: (c) Range betterment account (1) Definition of secretary concerned In this section, the term Secretary concerned means— (A) the Secretary of Agriculture, with respect to National Forest System land