When President Obama signed the Medicare Access and CHIP Reauthorization Act of 2015 into law in April, he helped ensure more than 1 million children will continue to have health insurance. The Children’s Health Insurance Program—commonly known as CHIP—covers children from families that earn too much to qualify for Medicaid, yet do not earn enough to qualify for federal health insurance subsidies. In 2013, 8.1 million children were enrolled in CHIP, according to the Centers for Medicare and Medicaid Services. The program has cut in half the rate of uninsured children, going from 14 percent in 1997 to 7 percent in 2012. CHIP originally had been set to expire this year due to the passage of the Affordable Care Act. When the U.S. Supreme Court made Medicaid expansion voluntary, states that chose not to expand their programs would have run into problems with insurance being lost for children whose families make too much to qualify for Medicaid should CHIP have expired.