Federal law exists to avoid confusion. There would be marketplace chaos if states regulated whatever they wanted.

We believe that the (federal government) has sole authority to regulate fuel economy in order to avoid a patchwork quilt of fuel economy regulations.

Employee benefit plans are regulated by federal law, not by the states.

democracy is a see-saw between complete chaos and tolerable confusion

We have one law for everyone and no one is above the law. We are not going to tolerate chaos after today.

It's an inconvenience. But it pales in comparison to getting your car stolen.