The states DID NOT give it up voluntarily.
The states LOST their sovereignty when the FEDERAL GOVERNMENT began printing PRIVATE CHECKS (Federal Reserve Notes) as counterfeit and then CONFISCATED THE GOLD that was the only thing that might compete with FRN’s.
Once that was done, the Feda were free to print as much as they wanted, and bribe/coerce.force any state at all to do WHATEVER the feds decided was right, or what would bring them and their buddies the best deal.
Before the FRA (Federal Reserve Act), the STATES (the people) created the wealth and chose to (or chose not to) give it to the Federal Government).
After that, the Federal government (actually, it’s agents) created the wealth and made the States (the PEOPLE!!!) beg for it.
Toss in Income Taxes and the stage was set for a federal power grab.
glad to see some people know the law