'Obamacare' has its day in court

This week, the US Supreme Court will examine Barack Obama's healthcare overhaul. The Affordable Care Act, called Obamacare by its opponents, was passed almost exactly two years ago. One very bone of contention is the "individual mandate", which forces all Americans who don't already own healthcare to buy insurance. Republican opponents have filed several court challenges. No subject is more controversial in US politics right now - and elections are just seven months away.