Likely the same with any other major nation state (I bet the chinese govt once showed Google it could at will access all their data, in order to capitulate cooperation, while the US is given full access at any time for any reason)
Are you familiar with Aurora? It was that time in 2009 when a Chinese military unit broke into Google and started poking around for information about some known dissidents. They were expunged quickly and the level at which Google stepped up their security game is unparalleled in the history of infosec.
Yes, the NSA or various law enforcement groups can get information from Google if it goes through the proper channels, and there's probably a handful of intelligence community insiders who hand data out of Google from time to time as well, even as part of various intelligence sharing agreements, but the idea that the NSA just has free access to whatever they want there is ridiculous.