It is “sad,” says MIT professor Jonathan Gruber, that presidential candidate Mitt Romney is running away from his Massachusetts health care plan, a plan that Gruber says “gave birth to one of the greatest pieces of social legislation in our history,” namely [Alleged] President Obama’s 2010 health-care reform legislation. Aside from Romney, Gruber is the man most responsible for the Massachusetts plan. And given how important the debate is over the ‘Cares — RomneyCare and ObamaCare, as they’re often dubbed — I decided to go to the man who perhaps knows more than anyone about the development of both. In...