Massachusetts may soon join California in dictating livestock production methods in a manner that greatly disrupts the farming industry. This is all certain to raise costs and impact interstate trade in food products.Massachusetts may soon join California in dictating livestock production methods in a manner that greatly disrupts the farming industry. California’s ban on battery cages has thus far survived challenges over its extra-territorial impact on other states, and the expansion of “designer” production requirements in other jurisdictions is certain to raise costs and impact interstate trade in food products.The irony is that at the same time U.S. EPA is asserting federal control over small ditches of water far from any actual boating...