Reciprocal Market Access Act of 2007 - Prohibits the President from agreeing to the reduction or elimination of the existing rate of duty on any product in order to carry out any trade agreement entered into between the United States and a foreign country until the President certifies to Congress that: (1) the United States has obtained the reduction or elimination of tariff and nontariff barriers and policies and practices of such foreign country with respect to U.S. exports of any product that has the same physical characteristics and uses as the product for which the President seeks to modify its rate of duty; and (2) any violation of the trade agreement is immediately enforceable by withdrawal of the modification of the existing duty on such foreign product until the United States Trade Representative (USTR) certifies to Congress that the United States has obtained the reduction or elimination of the tariff or nontariff barrier or policy or practice of such foreign government.