With 156 million Americans currently enrolled in employer-sponsored health insurance, according to the Employee Benefit Research Institute, a mass exodus from employer-coverage would represent a sea change in American health care.

FORBES: Will Employer-Sponsored Health Insurance Survive ObamaCare?

In 2005 the Chicago-based Heartland Institute, along with the Council for Affordable Health Insurance (CAHI, which I was president of at the time) published Destroying Insurance Markets, by Conrad F.

FORBES: The Constitutional Issue in ObamaCare Isn't Cost, but Control

According to the Employee Benefit Research Institute, workers would pay almost a third more for health insurance as individuals than as part of a firm of 1, 000 workers or more, tempting some to drop coverage altogether and so swell the ranks of America's 46m uninsured.

ECONOMIST: Corporate health plans