Dual Sovereignty
Both the Federal and State governments have jurisdiction. If the either the state or federal charges get pardoned or acquitted, the other can also prosecute, double jeopardy rules don’t affect dual sovereignty.
Edit: The funny thing about this dual soreignty, is that he can get a Jury Nullification on state charges, but then get charged with federal charges and get a different Jury, and this Jury might decide to not nullify and he can still get convicted.
Technically, its considered different two different “offences”, one is against the State, the other is against the United States of America, even though it may be just one act.
Oh fun fact. If a single act violates 2 states’ laws, boths states can individually try you for the same act, since they are different “offences” (even tho its the same act). And the federal government can still try your case on top of that. (Although, I don’t know of many instances of doing one act that get you violating 2 states’ laws)
I agree, it’s bullshit, but the supreme court decided its okay so here we are… sorry, I don’t decide the rules, go argue with the supreme court about it 🤷♂️