Funny how 'reciprocity' doesn't seem to apply to taxes or extradition..
edit:
Taxes; Even in the EU, forms will ask about American tax status, because an American citizen living abroad must still file taxes. I must provide this information, despite never having been an American Citizen.
Extradition; https://en.wikipedia.org/wiki/UK%E2%80%93US_extradition_trea...