evidence: The Biden-Harris Administration announced 21.3 million people selected an Affordable Care Act Health Insurance Marketplace plan during the 2024 Open Enrollment Period. Total plan selections include more than five million people — about a fourth — who are new to the Marketplaces and 16 million people who renewed their coverage. Notably, open enrollment continues in four states and Washington, D.C., through January 31. "For decades, when it came to federal programs we could depend on to keep Americans covered, three were always top of mind — Medicare, Medicaid, and Social Security, but now it’s crystal clear that we need to add a fourth — the Affordable Care Act," said HHS Secretary Xavier Becerra. "Once again, a record-breaking number of Americans have signed up for affordable health care coverage through the Affordable Care Act’s Marketplace, and now they and their families have the peace of mind that comes with coverage. The ACA continues to be a successful, popular, and important federal program to millions of people and their families. As we celebrate the success of this most recent enrollment effort, HHS will double down on the Biden-Harris Administration’s efforts to increase access to quality care and lower costs."