Corporate Welfare Reform Commission Act of 2003 - Establishes the Corporate Welfare Reform Commission to: (1) examine and identify the programs and tax laws that provide inequitable Federal payments; and (2) review such payments with the goal of ensuring fairness and equity in the operation and application of such programs and laws; and (3) report to Congress on recommendations for the termination, reduction, or retention of such payments. Authorizes the Comptroller General to provide assistance to the Commission. Sets forth procedures for congressional consideration and implementation of the Commission's recommendations.