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As millions of Americans face a steep rise in health insurance costs, lawmakers continue a century-long battle over who should pay for health care

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19.12.2025

Dec. 15, 2025 – the deadline for enrolling in a marketplace plan through the Affordable Care Act for 2026 – came and went without an agreement on the federal subsidies that kept ACA plans more affordable for many Americans. Despite a last-ditch attempt in the House to extend ACA subsidies, with Congress adjourning for the year on Dec. 19, it’s looking almost certain that Americans relying on ACA subsidies will face a steep increase in health care costs in 2026.

As a gerontologist who studies the U.S. health care system, I’m aware that disagreements about health care in America have a long history. The main bone of contention is whether providing health care is the responsibility of the government, or of individuals or their employers.

The ACA, passed in 2010 as the country’s first major piece of health legislation since the passage of Medicare and Medicaid in 1965, represents one more chapter in that long-standing debate. That debate explains why the health law has fueled so much political divisiveness – including a standoff that spurred a record-breaking 43-day-long government shutdown, which began on Oct. 1, 2025.

In my view, regardless of how Congress resolves, or doesn’t resolve, the current dispute over ACA subsidies, a durable U.S. health care policy will remain out of reach until lawmakers address the core question of who should shoulder the cost of health care.

In the years before the ACA’s passage, some 49 million Americans – 15% of the population – lacked health insurance. This number had been rising in the wake of the 2008 recession. That’s because the majority of Americans ages 18 to 64 with health insurance receive their health benefits through their employer. In the 2008 downturn, people who lost their jobs basically lost their health care coverage.

For those who believed government had a primary role in providing health insurance for its citizens, the growing number of people lacking coverage hit a crisis point that required an intervention. Those who place responsibility on individuals and employers saw the ACA as perversion of the government’s purpose. The political parties could find no common ground – and........

© The Conversation