I am a citizen of the several states not the federal government! You have no authority over me!
DC is a bad place for "that guy" to go and visit.
It was created essentially as a fort and naval yard, where congress and potus could also reside. It's a federal reservation beholden to no State. Claiming to have no federal affiliation there would just invite treating you like a spy, trrrrist or illegal alien (who isn't currently employed to clean some congress critter's home).