The Obama administration significantly expanded the individual mandate exemption recently and the exemption looks to swallow the rule. The individual mandate, for all intents and purposes, is dead.
Before the US Supreme Court, in oral argument, Solicitor General Donald Verrilli argued that without the individual mandate, along with a number of other provisions, the entire healthcare reform law would fail. They were parts so essential that to do without was to condemn the law to failure.
President Obama just killed his own signature accomplishment. Obama killed Obamacare. At this point it's only a question of whether the GOP repeals it or the law stays and destroys the entire health insurance industry.