Yesterday, Cato released a new study, “The Massachusetts Health Plan: Much Pain, Little Gain,” which showed that official estimates overstate the gains in health insurance coverage resulting from a 2006 Massachusetts law by at least 45 percent. The study also finds: supporters understate the law’s cost by nearly 60 percent; government programs are crowding out private insurance; self-reported health improved for some but fell for others; and young adults are responding to the law by avoiding Massachusetts.

Given that the Massachusetts health plan bears a “remarkable resemblance” to the Obama plan, the study should serve as a warning sign to members of Congress, says Michael Cannon, director of health policy studies.

The study has received coverage in Investor’s Business Daily, The Wall Street Journal, The Washington Post, Detroit News, The Washington Times, the Reason Foundation and the Pioneer Institute.