More than a decade after passage of the Affordable Care Act (ACA), the number of Americans without health insurance is rising again. The increase, in part, is due to job losses caused by the COVID-19 pandemic and to President Trump’s executive actions seeking to unwind the sweeping health care law. After a bruising presidential campaign and election, where health care was a key issue, President-elect Joe Biden is planning to strengthen the law, but a partisan divide will likely impede his efforts. Meanwhile, the Supreme Court is considering whether to rule the ACA unconstitutional in a case brought by Republican state officials. The legal challenge involves the law’s requirement known as the individual mandate — but legal experts predict the justices will uphold the ACA.