Now It's Illegal In The US? Selling Used Software

This is a small catastrophe, and a major hit against freedom of the U.S. customers. It's a shame. You can read it in this official PDF, if you can calm your anger.
But what now?
The answer is clear: Don't buy software anymore.
This is insane. Another reason to use free software only. Maybe some companies will give you a permission to do so. But until it's written clearly, you may find yourself sued for doing what's your right: Selling old stuff you don't need anymore.

You can find an article about on Law.com, too.