Do You Think Breyer Knows Who Hamilton Was?

Probably not:

But as the plan of the convention aims only at a partial union or consolidation, the State governments would clearly retain all the rights of sovereignty which they before had, and which were not, by that act, EXCLUSIVELY delegated to the United States.

Alexander Hamilton, Federalist No. 32, January 3, 1788

Yup, Founders' intent is awfully hard to discern, given these were some of the greatest men of letters the world has ever produced and they wrote prolifically on these topics.