http://www.spiegel.de/international/world/nsa-spied-on-chine...
>Research by SPIEGEL reporters in Berlin and Washington, talks with intelligence officials and the evaluation of internal documents of the US' National Security Agency and other information, most of which comes from the archive of former NSA contractor Edward Snowden, lead to the conclusion that the US diplomatic mission in the German capital has not merely been promoting German-American friendship. On the contrary, it is a nest of espionage. From the roof of the embassy, a special unit of the CIA and NSA can apparently monitor a large part of cellphone communication in the government quarter. And there is evidence that agents based at Pariser Platz recently targeted the cellphone that Merkel uses the most.
http://www.spiegel.de/international/germany/cover-story-how-...
Well, I suppose it's in China's and Germany's interests, but doing things like that that benefit another country at the expense of your own is generally called treason.
>Treason against the United States, shall consist only in levying War against them, or in adhering to their Enemies, giving them Aid and Comfort. No Person shall be convicted of Treason unless on the Testimony of two Witnesses to the same overt Act, or on Confession in open Court.
From http://www.heritage.org/constitution/#!/articles/3/essays/11...
In Cramer v. United States (1945), the Supreme Court held that a specific intent—adherence to the enemy, and therefore to harm the United States—is necessary, rather than the simple rendition of aid.