In June, the Supreme Court upheld most of the Obama administration's 2010 health care law, allowing the government to fine people who decline to buy medical insurance. But the court barred cutting off Medicaid funds for states that refuse to participate in a new program expanding health care for the poor. Some Republican governors have balked at the expanded coverage, undermining the administration's goal of adding 30 million people to the health insurance rolls. Meanwhile, GOP presidential nominee Mitt Romney, along with many congressional Republicans, vows to repeal the entire Affordable Care Act, arguing it is too costly and abridges individual freedoms. The law's supporters, however, say its benefits already are evident, as children with pre-existing illnesses can no longer lose coverage and young adults can enroll in their parents' health plans.