Don’t expect Mitt Romney to backtrack on his Massachusetts health-care plan at any point this election cycle. “I am sure there are many people who have calculated, and perhaps correctly, that the healthcare plan I put in place in Massachusetts is not good for me politically, and if I want to encourage my political future, I should say it was a mistake and walk away from it,” Romney told Fox Business Network host Neil Cavuto in an interview set to air later tonight. “You have seen a lot of candidates look at their biggest vulnerability, call it a mistake, and...