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Treaty signed at Mexico City on December 9, 1987; transmitted by the President of the United States of America to the Senate February 16, 1988 (Treaty Doc. 100-13, 100th Congress, 2d Session); reported favorably by the Senate Committee on Foreign Relations September 27, 1988 (Senate Executive Reports No. 100-27, 100th Congress, 2d Session and No. 101-9, 101st Congress, 1st Session); Advice and consent to ratification by the Senate October 24, 1989; Ratified by the President January 2, 1990; Ratifications exchanged at Mexico City May 3, 1991; entered into force May 3, 1991.

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U.S. Department of State

The Lessons of 1989: Freedom and Our Future