Romney has taken to making three arguments in his defense. First, he criticizes Obamacare for its $669 billion in tax increases, claiming that the Massachusetts plan did not increase taxes. That is technically true — if you consider only the legislation as Romney signed it. However, it is also true that the legislation relied heavily on federal subsidies — more than $300 million — and was still underfunded. Romney’s successor was forced both to cut back on some benefits that the plan originally offered and to raise the state’s cigarette tax by $1 per pack ($154 million annually) to help pay for the program. The state also imposed approximately $89 million in fees and assessments on health-care providers and insurers.

Second, Romney correctly points out that he used his line-item veto to challenge several objectionable provisions of the bill, including its employer mandate, but had his vetoes overridden by the Democratic-controlled legislature. To some degree those vetoes were an exercise in political theater, since the override was always a given. In the end, Romney signed the bill itself, even knowing that the objectionable provisions would be put back in. And he continues to support some of the plan’s worst aspects, notably the individual mandate.