Dc does not have voting representatives in congress. They only get electoral votes because of the 23rd ammendment

Carbon monoxide leak in a theater

I think you could set it up in case of a vacancy (retirement/resignation /impeachment/death) someone would be nominated to fill that slot but it’s term limit would still be the same as when the person vacated, so if they were 10 years in, whoever it would be could only serve 8 more years

Iirc constitutional ammendments have to pass both congress AND the states. It’s not an either or

Yup ol papa Joe beat Hitler all by himself with his hands tied behind his back. What’s that? Lend lease? Never heard of it.