In the thick of the debate over President Barack Obama’s health care reform bill, administration officials ignored warnings that one of its most controversial provisions was financially unsustainable and could leave taxpayers on the hook for billions of dollars. According to a report released Thursday by a working group of congressional investigators, officials inside the Department of Health and Human Services ignored numerous red flags about the Community Living Assistance Services and Supports program (CLASS) — and in some cases the officials went to work figuring out how to hide them. Now, those same officials are scrambling to come up...