One of the clearest success stories in US healthcare over the past 20 years has been the dramatic decline in the number of Americans without health insurance. In 2010, the year the Affordable Care Act was enacted, 16 percent of the population lacked coverage. By 2025, according to estimates from the US government, that figure was cut nearly in half, to 8.3 percent. The increase in coverage hasn’t been a panacea; even people with an insurance card can struggle to afford their medical bills or to secure a doctor’s appointment . But with the US standing alone among its international peers in its failure to offer universal healthcare , it represented significant progress toward ensuring every American had a basic level of access to routine medical services. Now, however, those gains are about to be reversed.…