The Affordable Care Act’s (ACA’s) second open enrollment period is in full swing, allowing Americans to compare insurance options available in the health insurance marketplace and enroll in new coverage.

Signed into law in 2010, the ACA set out to provide Americans with affordable, high-quality and comprehensive health insurance. More than a year after its first open enrollment period, the legislation has significantly reduced the number of uninsured Americans and improved access to care for children and families across the country.

The law’s success did not come without bumps in the road. A shaky launch of the marketplace website, Healthcare.gov, more than 50 votes by Congress to repeal the law, 23 states that have opted not to expand Medicaid and numerous court challenges have impacted its implementation.

Despite these continued challenges, recent data show the ACA is doing its job: insuring more Americans. Here are a few key facts...

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