The experience of the Great Recession reveals important holes in the safety net. In particular, the central cash-assistance program in the United States, Temporary Assistance for Needy Families (TANF), is failing to reach many poor families. In addition, the program does not automatically expand during economic downturns, when the need for the program is likely greatest and when additional consumer spending would be particularly helpful. To strengthen TANF, Marianne Bitler and Hilary Hoynes propose reforms to expand both the program’s reach and its responsiveness to cyclical downturns. They also propose ways to improve its transparency, which will help researchers and policymakers understand how the program works, who it supports, and how effectively it meets its goals.