Don’t be pedantic. The confluence of the Potomac and Anacostia (eastern branch before you try to correct me) was specifically chosen by George Washington for its suitability as a port. The furthest point south is now is Hains Point which is why I used it as a reference.

And do you really think the Mutiny of 1783 is relevant in the age of multiple federal law enforcement agencies operating with the sole purpose of defending federal buildings nationwide? Not to mention it was the president who didn’t order in the national guard on J6 so congress would have been better off in a state. And guess what, Park Police also have jurisdiction in MD, and VA, and are a relatively recent invention. So I’m not really sure what that has to do with anything.

Point is that in our modern era there is a very large federal footprint within states and it manages just fine, whether it’s court houses, executive agency offices, or Interior and Agriculture land.