puppy mill Missouri Tops Humane Society's List of Worst Puppy Mills By Taylor Reid • May 7, 2015 File Photo / KBIA Missouri topped the United States Humane Society’s annual “Horrible Hundred” list for the third year in a row. This list features the nation’s worst puppy mills, 23 of which were located in Missouri. How would you vote on Missouri’s ‘Right-to-Farm’ amendment? By Abbie Fentress Swanson • May 21, 2013 twi$tbarbie/Flickr Next year, Missouri voters will get a chance to consider a controversial constitutional amendment that would affirm the rights of farmers to engage in "modern" farming and ranching practices. Mo. lawmakers pass farm constitutional amendment By Marshall Griffin • May 14, 2013 USDA The Missouri House and Senate have passed a proposed constitutional amendment that would guarantee farmers and ranchers the right to farm and ranch using "modern methods."