Through a strained and tortured logic, the Court, in 5-4 opinion, struck
down the individual mandate—the requirement that individuals must
purchase health insurance if they do not have it already provided through
other means—while upholding the federal government's ability
to "tax" you for failing to do so.
The court managed to do so by refusing to call the "tax" a "penalty"—even
though the Affordable Care Act itself nowhere refers to a tax, but no
less than EIGHTEEN times calls it a penalty.
The options that any government has at its disposal to force you to do
something are limited: it can incarcerate you, or cost you money. The
Supreme Court's ruling, reduced to its essence, is this: the federal
government may force people to spend their own money to purchase something,
so long as the penalty for failing to do so is collected through the IRS.
The U.S. Constitution says that Congress may "regulate interstate
commerce." According to the U.S. Supreme Court, Congress now may
compel you to partake in commerce in the first place (even if it is not
interstate commerce). This is without precedent. The concept of a federal
government limited only to specific, enumerated powers is, as a practical
If you can bring yourself to read it, the opinion is here: