After prior health reform efforts failed, the Obama administration took up the issue again, crafting a complex reform package modeled on the Massachusetts plan. Urban researchers had helped inform and evaluate Massachusetts’s universal coverage program, and they were called upon again to help design the Affordable Care Act (ACA). After it was passed, Urban researchers evaluated nearly every aspect of the ACA to assess whether it was working as intended and how it affected the economy, employers, and people. Their analysis was cited by Supreme Court justices in deciding the law’s constitutionality. More recently, when Congress debated how to “repeal and replace” the ACA, Urban’s analysis provided essential facts about the number of people who would lose their health insurance in every state.