Days before the commencement of the 2012 Tennessee Walking Horse National Celebration in Shelbyville, Tenn., The Humane Society of the United States is launching a national tip line in English and Spanish to help crack down on the illegal and cruel practice known as "soring."? The HSUS offers a reward of up to $10,000 to anyone who provides any information leading to the arrest and conviction of a violator of the Horse Protection Act or any state law which prohibits horse soring, the deliberate infliction of pain to force horses to perform an artificially high-stepping gait for the show ring.