This study provides an assessment of the effects of agricultural policy reforms in Mexico since 1990 on the basis of the shared goals and policy principles of OECD Ministers. These goals and principles constitute a framework of policies that address a range of societal needs that can be met by the agricultural sector with the least cost and least unintended consequences. Typical unintended consequences of agricultural policies that fall short of these principles are distorted markets, economic inefficiencies, inequitable redistribution of incomes, and unsustainable use of resources. At the international level, unintended implications are distorted world markets and trade. The focus of this study on the agricultural sector, and more specifically on production agriculture, limits the scope of the conclusions and recommendations. Many further reforms in agricultural policy must be taken in tandem with improvements in policies of other sectors or nation-wide.