[fineman]

Wouldn't the authors of the software be able to sue if the licensee didn't fulfill their obligations? And wouldn't one of the civil remedies sought be to ban importation if the offending product into the country in question?

From my (not a lawyer) reading, it seems to suggest that the government can't forbid the sale of closed-source software.

Also, you don't need a license to use software, which is why the GPL is irrelevant to end users. But I can't see how someone choosing the use GPLed software is doing anything different than downloading the Torque 3d engine, etc. It's freely accessible, but you have to agree to some conditions to legally do certain things with it.