Here's a link to the HSUS site that has the U.S. map and it says a tiny bit about TN laws.
Stop Puppy Mills | The Big Picture
And a link to get to your senator or rep
The Humane Society of the United States: Look up your elected officials
And a link to the HSUS with FAQs about how to help.
What You Can Do
I'm going to write to my local legislators ASAP!!!