Wikipedia's article on the Personal Responsibility and Work Opportunity Reconciliation Act of 1996 covers the law, signed by Bill Clinton after passing the Republican-controlled Congress, that replaced Aid to Families with Dependent Children with Temporary Assistance for Needy Families, adding work requirements and time limits while giving states more control over welfare. It also reports falling caseloads, disputed effects on poverty, and critics, including Peter Edelman and Susan L. Thomas, who say the law left many families poorer and penalized single mothers and immigrants.