That's a good example. Even with that case, you will find people who, even if supporting California on its right to promulgate its own air regulations, then tu

That's a good example. Even with that case, you will find people who, even if supporting California on its right to promulgate its own air regulations, then turn around and object to other states doing something they don't like, using that same principle. It seems principles are principles to the extent we agree with them.