Yes USA data center have audit policy. They audit server on timely as per low to check for any illegal activity found.
But this thread is not about storing your BTC on server. ITs for web hosting to host your website on high platform server with more reliable and support.
I would not store customer data or priv keys on a US based server under any circumstances.
I do believe that this is a sentiment echoed around the world cos of the NSA.
And what stops the webhost from modifying my javascript or adding some server code?
What stops the nsa from peeking into or getting into an agreement with that webhost?
Really not trying to dampen your mood, but do avoid US for datacenter businesses for a while.