trade policy, free trade, special interest, farm subsidies, trade policy tools, tariffs, import tariffs, export tariffs, export subsidies, ad valorem tariff, specific tariff, deadweight loss, non-farm subsidies, tax credits, tax-credit policy, import quotas, export quotas, tariff rate quota, in-quota tariff, over-quota tariff, voluntary export restraint (VER), quota rent, local content requirement, administrative policies, dumping, anti-dumping policies, unfair competition, fair profit, fair price, counterveiling duty,