The Supreme Court has preserved a key part of the Affordable Care Act’s preventive health care coverage requirements, rejecting a challenge from Christian employers to the provision that affects 150 million Americans.

Siding with the government on Friday, the court upheld the Affordable Care Act, allowing the U.S. Preventive Services Task Force to continue determining which services will be available free of cost to Americans covered by the Affordable Care Act.

The U.S. Supreme Court is expected to rule on Friday on the legality of a key element of the Obamacare law, formally called the Affordable Care Act, that helps guarantee that health insurers cover preventive medical care such as cancer screenings at no cost to patients.