Just wanted to add a bit more info I found, especially for those living in Missouri:
ADVOCACY
Contact your state legislator and let them know you are concerned about the issue of puppy mills in your area. Click here to find your legislator
Humane Society of Missouri - http://www.hsmo.org: Animal-Related Legislation.
If you live in Missouri you can also get involved through the Missouri Alliance for Animal Legislation
Missouri Alliance for Animal Legislation.
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Over the years, being an Iowan, I have jokingly called/pronounced Missouri "Misery" -- well this is Misery for these poor dogs in Missouri. How I would like to see the puppy mills shut down in Missouri, shut down in Iowa, shut down across the USA!