The unhealthy accounting of uninsured Americans

The Census Bureau estimates that the number of uninsured amounts to 45.7 million people, but the agency might be overcounting by millions due to faulty assumptions, says Carl Bialik in this article for the Wall Street Journal. That 45.7 million figure also includes undocumented immigrants, even though they aren't likely to be covered under new laws, Bialik says. But that hasn't stopped both parties in Congress from using the flawed numbers liberally as they debate healthcare overhaul this summer, he adds.