Under the ACA, insurers must reduce cost-sharing obligations—copayments and deductibles—for low-income enrollees. But as explained by JoAnn Volk, Dania Palanker, Justin Giovannelli, and Kevin Lucia of the Georgetown Health Policy Institute, the Trump administration could pull the plug on government payments that support these reductions—even without the law’s repeal. It’s a move, they say, that could throw the individual health insurance market into chaos.