Since the Supreme Court ruled on the Affordable Care Act – also known as Obamacare – there have been lots of questions about Medicaid: How it's funded, what the Supreme Court decision meant, and what's going to change now. While the Supreme Court upheld most of the Affordable Care Act, it struck down a part of the law pertaining to states' participation in expanding Medicaid eligibility. The Court ruled that Congress cannot hold hostage existing Medicaid funding in order to compel states to comply with the expansion. If you find this a little confusing, you're not alone.