Empirical evidence supports the proposition that national income growth is strongly affected by trade specialization and comparative advantage in eight economic sectors. Commercial policy distortions and factor intensity reversals explain why trade does not always fit the skilled labor continuum...

Market access remains a major impediment for expansion of global trade in high-value foods, particularly processed foods. Countries use tariffs and other measures that effectively stimulate imports of relatively unprocessed agricultural commodities at the expense of processed products. Tariff...