I can be proud of my employer's substantial efforts to address NSA warrants, and would challenge you to find any single entity that has done more.
http://www.bbc.co.uk/news/technology-25910694
https://www.reformgovernmentsurveillance.com/
http://www.nationaljournal.com/tech/google-2015-will-be-the-...
http://www.theguardian.com/technology/2013/oct/31/apple-face...
http://dcinno.streetwise.co/2014/11/17/google-microsoft-appl...
The tax code is byzantine and full of loopholes.
Warrants are comparatively straightforward. The paper says "jump", you say "how high?" or else. In any case, handed a warrant signed by a judge (kangaroo FISA court or otherwise), you hand over the info first and fight it later. Anything else is obstruction.
It's interesting that you guys figured out how to circumvent the US tax law, by hiding money in tax havens. I guess dodging the NSA warrants is not a priority.