The Meat Institute has criticized the USDA's Agricultural Marketing Service (AMS) for attempting to change the legal standard under the Packers and Stockyards Act without Congressional approval. The Institute argues that this move would lead to increased litigation costs and higher meat prices for consumers, and claims the proposed rule is vague, unconstitutional, and economically flawed. In contrast, USDA Secretary Tom Vilsack defends the rule, stating it aims to ensure fairer market practices and lower prices for consumers.