Ronald Reagan actually said...
It is appropriate for me, at this time, to reaffirm the positions agreed to by both sides in the Shanghai Communiqué and the Joint Communiqué on the Establishment of Diplomatic Relations between the United States of America and the People's Republic of China.
Context
Letter to Premier Zhao Ziyang of the People's Republic of China on the 10th Anniversary of the Shanghai Communiqué
02/27/1982