Comment by malandrew

True. However I wonder if they could at least impose an embassy from which many forms of eavesdropping are not possible. i.e. US draws up floorplans and whatnot. The Germans modify those plans to make it into a giant Faraday cage will precisely defined inlets and outlets for water, gas, electricity, sewage, etc. Lastly all additions to the structure externally are to always inspected to make sure they don't contain eavesdropping equipment.

This would at least force all eavesdropping and surveillance performed to be the same kind of eavesdropping and surveillance doable from US soil. Furthermore, the Germans can try to perform some form of enforcement on what types of people can show up at the embassy to work.

With biometrics and sharing between countries, it's conceivable that one day you won't be able to cross official borders with two identities ever again. This means that you effectively force someone to choose only one identity forever. That identity can either be one of your secret government identities or it can be your real identity, but it can no longer be both at different times. Once you choose, you'r stuck with that decision