For generations, California has used its size to dictate product standards to the rest of the country. The threat is to comply with their loony laws or lose access to the biggest market in the country.
Case in point, California passed an initiative about 10 years ago, forcing chicken farms to give their egg laying flocks a minimum of 116 inches of floor space per bird. The measure forced Golden State farmers to reduce the size of their flocks rather than spend their resources on building and maintaining larger chicken houses. To protect their own farmers from out of state competition, the state passed a law in 2010 making the standard apply to all chickens whose eggs are sold in California.
Now, California has to import about half of its eggs from other states. After trying individual lawsuits to put a stop to the $350 million annual additional cost to all Americans to satisfy CA’s chicken advocates, 12 states have banned together to sue California. To speed up the legal maneuvering, they are seeking the Supreme Court to take up their challenge.