Jimmy Carter actually said...
The amendments to the TSUS set forth in section 3(b) of P.L. 96-490 shall be effective on the date of this Proclamation and shall be effective as to articles exported to the United States on or after the date of this Proclamation.
Context
Proclamation 4809—To Make Effective the Amendments of Section 3(b) of Public Law 96-490 and for Other Purposes
12/16/1980