Lyndon Johnson actually said...
Subject to the applicable provisions of the trade agreement with Canada identified in the eighth recital of this proclamation and of the General Agreement and other agreements supplementary thereto, the modification or continuance of existing duties or other import restrictions, and the continuance of existing duty-free or excise treatment, provided for in the schedule in annex II to such agreement with Canada shall be effective on and after January 1, 1966, and, as a result thereof,
12/26/1965