2011 report by the Pew Hispanic Center on demographic trends relating to undocumented immigrants in the United States.
2010 study from Duke University on links between poverty, government assistance and health problems in the United States.
2011 GAO report on criminal activity by undocumented immigrants, their nationality and the estimated costs of such criminality to the United States.
Report from U.S. federal joint commission updating legal and human rights overview of China.
2010 study in Political Science Quarterly on qualities and representative nature of U.S. primary election caucuses.
2011 study by RAND Corporation on the potential of educational programs in minimizing summer learning losses and their associated costs.
2011 study in American Journal of Epidemiology on how depression rates are affected by types and qualities of city neighborhoods.
2010 study in Journal of Social Issues on global reception of new immigrants and cultural factors that produce negative attitudes toward them.
Study in Journal of Social Issues on differences in family priorities and learning outcomes for immigrant children.
2010 study by USDA's Center for Nutrition Policy and Promotion on the costs of providing for child-rearing needs, based on a survey of more than 15,000 households.