The way it currently stands is that as a U.S. Citizen/Permanent Resident you are required by law to have a documented health insurance with a defined minimal se

The way it currently stands is that as a U.S. Citizen/Permanent Resident you are required by law to have a documented health insurance with a defined minimal set of coverage based on your circumstances; however, there is no penalty, fee, or other legal method of enforcement of this law, which makes it effectively meaningless. It is on this basis that SCOTUS in recent weeks ruled that there is no reason to change the law, since there is no harm caused by it. A bit screwy, but it's logically sound.