If the US citizens like to be spied on by its own agencies, fine for me.
As a German citizen I'm not so happy that German citizens, politicians and companies are targets of spying of unprecedented scale and depth. As a consequence we (and others, too) will have to scale back the use of US hardware, software and services. Privacy, data security, confidentially etc. are not provided. A German company would be stupid to store data on servers reachable for US industrial espionage. It's really tough to avoid that - given that the US surveillance and spying is also done directly in Germany in a large scale.
Additionally we should also deny the US the capability to plan their targeted killings from Germany - for example from the US military central command for Africa - which is located in Germany. From there strikes with armed drones are planned and controlled. Unfortunately the German government does not seem to be willing and/or able to prevent that...