News on Top Religious leaders pray over a bible and a copy of the supreme court verdict in Washington.

The individual mandate, however, does not regulate existing commercial activity. It instead compels individuals to become active in commerce by purchasing a product,on the ground that their failure to do so affects interstate commerce. Construing the Commerce Clause to permit Congress to regulate individuals precisely because they are doing nothing would open a new and potentially vast domain to congressional authority. Every day individuals do
not do an infinite number of things. In some cases they decide not to do something; in others they simply fail to do it. Allowing Congress to justify federal regulation by pointing to the effect of inaction on commerce would bring countless decisions an individual could potentially make within the scope of federal regulation, and – under the Government's theory – empower Congress to make those decisions for him.

Or her, John Roberts. So I think we can conclude that the supreme court would not uphold a congressional mandate for everyone to purchase broccoli.