The Comptroller General of the United States shall conduct an investigation of the impact which emergency support grants have on the operations of State and local governments and on the national economy. Before and during the course of such investigation the Comptroller General shall consult with and coordinate his activities with the Congressional Budget Office and the Advisory Commission on Intergovernmental Relations. The Comptroller General shall report the results of such investigation to the Congress within one year after July 22, 1976, together with an evaluation of the macroeconomic effect of the program established under this subchapter and any recommendations for improving the effectiveness of similar programs. All officers and employees of the United States shall make available all information, reports, data, and any other material necessary to carry out the provisions of this subsection to the Comptroller General upon a reasonable request.