Angela Merkel denied access to her NSA file
theguardian.com
theguardian.com
Someday the Americans (including the NSA, CIA, White House etc) will finally wake up and realise they have pissed off their remaining friends in the world. I suppose their partners-in-surveillance (GCHQ, Mossad etc) will still hang around.
That said, I don't see how anyone could possibly have the expectation that the NSA hand over state secrets just because an upset foreigner asks for it. Doing so would blatantly contradict their entire mission and purpose. Americans would (and should) be more concerned if they complied.
I guess you could object to the NSA's mission as a whole, though then it doesn't become specific to the mood of Merkel or other nations.