Obamacare is back before the Supreme Court in a challenge to its no-cost coverage requirements for certain preventive health services.

The justices will weigh the constitutionality of the US Preventive Services Task Force, which recommends the tests and treatments insurers should cover, when they return to the bench on Monday for the April sitting.

If the lower court's decision is upheld, "it is possible, given the posture of the case, that over 150 million Americans lose free coverage of hundreds of benefits," said Sara Rosenbaum, an emerita professor of health law and policy at George Washington University.

Rosenbaum joins Cases and Controversies hosts Greg Stohr and Lydia Wheeler to talk about why the case is more about power than it is public health and what's at stake if the court does away with the insurance coverage that’s caught in its crosshairs.

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