The controversy surrounding the recent mammography guidelines issued by the U.S. Preventive Services Task Force is a recommendation for swift and decisive defeat of efforts to expand federal oversight of health care.  It almost seems as if this was designed as a laboratory experiment to learn exactly what will happen under Obamacare.  The results validate some of the most compelling arguments that opponents have made over the past few months.

When opponents claim that Obamacare will lead to rationing of medical services, defenders counter with an irrelevant but true retort that care is already rationed by insurance companies.  By this logic, everything is rationed by economics.  Housing is rationed by the availability of capital to invest in housing which is a...