Donald Trump pulled the U.S. out of the Paris agreement, and now states, municipalities and companies are declaring their own effort to reduce emissions. Interstate Barriers Now that the high court has given California full authority to impose its animal welfare standards on other states, those states previously supplying conventionally-raised eggs have the opportunity to respond in kind. California is the largest farm state, often supplying horticultural crops not grown in major egg-supplying states like Missouri, Iowa or Idaho. Those states could declare their own prohibitions that would hit California such as no copper hydroxide on apricots, no paraquat on figs, or no cryolite on kiwi. Thanking Trump Donald Trump pulled the U.S. out...