I don't think you understand what the concept of statehood is. We are a nation composed of many states united for the greater good. The federalists and anti-federalists debated the power of the federal government for a long period of time.
on one side you had a group not wanting to be under the thumb of another large oppressive government.
the other had faith that the government "of the people" could be fair and just.
so what do we have here now. A huge government that doesn't seem to know the will of the people and a fragmented union on most theological settings has swooped in the stop one of the smaller nations from enforcing laws that are on the books.
what a different world we would live in if dtste law trumped federal law.
should she be impeached? Yes
she essentially used the power of the federal government to halt the wheels of a law that was put in place for the state, by the state.

