Illinois thumbs its nose at Amazon

Here is the note I got today from Amazon.
What are the viable options?

Greetings from the Amazon Associates Program:

We regret to inform you that the Illinois state legislature has passed an unconstitutional tax collection scheme that, if signed by Governor Quinn, would leave Amazon.com little choice but to end its relationships with Illinois-based Associates. You are receiving this email because our records indicate that you are a resident of Illinois.