As millions of Americans grapple with soaring health insurance costs, lawmakers find themselves in a century-old debate over who should bear the financial burden of healthcare. The Dec. 15, 2025 deadline for enrolling in the Affordable Care Act (ACA) marketplace for 2026 passed without an agreement on federal subsidies, leaving millions of Americans facing a steep rise in healthcare costs. This standoff has its roots in a long-standing disagreement about the role of government in providing healthcare. As a gerontologist studying the U.S. healthcare system, I'm here to shed light on this complex issue. The ACA, passed in 2010, aimed to reduce the number of uninsured Americans by 30 million, but the political divide over its subsidies has led to a government shutdown and a record-breaking 43-day-long impasse. The core question remains: who should pay for healthcare? The ACA's strategies, including Medicaid expansion and subsidies for low- and moderate-income individuals, have had a significant impact on reducing the uninsured rate. However, the enhanced subsidies introduced during the pandemic are set to expire, leading to a substantial increase in healthcare costs for many. This controversy highlights the ongoing debate over the role of government in healthcare and the potential consequences for millions of Americans.