George Bush actually said...
This proclamation shall become effective, said Agreement shall enter into force, and nondiscriminatory treatment shall be extended to the products of the Czech and Slovak Federal Republic, in accordance with the terms of said Agreement, on the date of exchange of written notices of acceptance in accordance with Article XVIII of said Agreement.
Context
Proclamation 6175—Agreement on Trade Relations Between the United States of America and the Czech and Slovak Federal Republic
09/05/1990