Earlier quoted context omitted.
That's how you get your patent broken.
Has the US ever disallowed a patent because the company holding it refused to sell a product to the government at the price the government wanted? It's hard to imagine SCOTUS allowing that sort of thing. The US gov't is subject to its own laws.
That's the thing about governments: they can do whatever they want. And your recourse is to deal with it or spend years fighting against it (or die in the streets fighting it, lest we forget that option).
Disclaimer: I'm for breaking patents when necessary, although 3D printing drugs is around the corner making it a moot point.
EDIT: @refurb:
I love coming to HN and having people say "its too hard, it'll never be done". ;)
I can run the laser sintering machine in my garage and build metal parts from a fine powder, parts that are aircraft grade, but I won't be able to 3D print drugs at home? No imagination.