Republican presidential candidate Mitt Romney appears to have shifted his stance on Obama’s landmark healthcare law, echoing party members by calling the mandate requiring people to buy health insurance a “tax.” Romney’s remarks come days after his top spokesperson said Romney does not believe the mandate is a tax. The U.S. Supreme Court upheld the individual mandate at the core of Obama’s healthcare law last week on the grounds of it being a tax. Romney enacted a nearly identical mandate when he was governor of Massachusetts.