The day the Affordable Care Act passed was one of my proudest moments as president, because it meant that millions of Americans would have access to health care, some for the first time. The ACA also prevented insurance companies from denying people with pre-existing conditions coverage, allowed young people under the age of 26 to remain on their parents’ plan, expanded Medicaid, and so much more. But the ACA was always meant to be a first step. We still have to do more to expand access and make health care more affordable for everyone.