12/31/1979
https://www.presidency.ucsb.edu...
"Section 4 violates the constitutional separation of powers by purporting to give Congress a role in administering substantive statutory programs."
"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 ..."
"Section 4 violates Article I, section 7 of the Constitution."
"I have signed into law an Act 'To approve and implement the protocol to the trade agreement relating to customs valuation, and for other purposes'."