In May 1963 Ministers reached agreement on three negotiating objectives for the round:
(a) Measures for the expansion of trade of developing countries as a means of furthering their economic development,
(b) Reduction or elimination of tariffs and other barriers to trade, and
(c) Measures for access to markets for agricultural and other primary products.
The working hypothesis for the tariff negotiations was a linear tariff cut of 50% with the smallest number of exceptions. A drawn-out argument developed about the trade effects a uniform linear cut would have on the dispersed rates (low and high tariffs quite far apart) of the United States as compared to the much more concentrated rates of the EEC which also tended to be in the lower held of United States tariff rates.
The EEC accordingly argued for an evening-out or harmonization of peaks and troughs through its cerement, double cart and thirty: ten proposals. Once negotiations had been joined, the lofty working hypothesis was soon undermined. The special-structure countries (Australia, Canada, New Zealand and South Africa), so called because their exports were dominated by raw materials and other primary commodities, negotiated their tariff reductions entirely through the item-by-item method.
In the end, the result was an average 35% reduction in tariffs, except for textiles, chemicals, steel and other sensitive products; plus a 15% to 18% reduction in tariffs for agricultural and food products. In addition, the negotiations on chemicals led to a provisional agreement on the abolition of the American Selling Price (ASP). This was a method of valuing some chemicals used by the noted States for the imposition of import duties which gave domestic manufacturers a much higher level of protection than the tariff schedule indicated.
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