On and after November 10, 2005, agencies and offices of the Department of Agriculture may utilize any unobligated salaries and expenses funds to reimburse the Office of the General Counsel for salaries and expenses of personnel, and for other related expenses, incurred in representing such agencies and offices in the resolution of complaints by employees or applicants for employment, and in cases and other matters pending before the Equal Employment Opportunity Commission, the Federal Labor Relations Authority, or the Merit Systems Protection Board with the prior approval of the Committees on Appropriations of both Houses of Congress.