supersede, or restrict in any manner any existing authority of the Comptroller General. (g) Exception to waiting period Subsection (a) shall not apply if, prior to obligating or spending any funding described in such subsection, the Secretary obtains approval in writing from at least three of the following individuals— (1) the Chair of the Committee on Agriculture of the House of Representatives, (2) the Ranking Member of the Committee on Agriculture of the House of Representatives, (3) the Chair of the Committee on Agriculture, Nutrition, and Forestry of the Senate