The Affordable Care Act is about to go under the microscope again at the U.S. Supreme Court, and this time, the composition of the court is much more conservative than it was during the previous two inspections.
The law has enabled an estimated 20 million people to obtain health insurance and provides subsidies to make coverage affordable for people with low incomes.
The law requires everyone either buy health insurance coverage or pay a "tax" that helps offset their use of the medical system