Your proposed solution creates its own host of problems. Someone can't vote in a state unless they are residents of that state, subject to the laws and jurisdiction of that state. For example - what does it mean for DC residents to vote in, say, Virginia, for a Federal election. Who defines the Congressional districts? Do you pre-dictate to Virginia that it gets a Congressional district that matches the boundary of DC? What if that district has radically more or fewer residents than other districts in the state?
I'm seriously considering your proposal and not mocking it, but I don't think it's any more or less sensible, on its face, than creating a new "state". Note, I put "state" in quotes because I don't see why we can't dictate in that state constitution that the state is administered by Congress.
I'm seriously considering your proposal and not mocking it, but I don't think it's any more or less sensible, on its face, than creating a new "state". Note, I put "state" in quotes because I don't see why we can't dictate in that state constitution that the state is administered by Congress.