Ninefold (http://www.ninefold.com) push this pretty hard (see the Data Jurisdiction link in their footer), but unfortunately I fear their (and my) local Australian legal system doesn't provide me with any protection against even medium-level US law enforcement "friendly requests".
When you see just how far the New Zealand law enforcement rolled over and violated national law at the request of US copyright enforcement in their shoddily executed raid on Kim Dot Com, I have very little doubt that in spite of Ninefold's marketing using legal jurisdiction nightmares if you use their major competitors AWS or Rackspace - if the NSA showed up even without local law enforcement on their side, me and my data would likley get "thrown under the bus" (especially in the light of stories like this: https://mailman.stanford.edu/pipermail/liberationtech/2013-J... )
When you see just how far the New Zealand law enforcement rolled over and violated national law at the request of US copyright enforcement in their shoddily executed raid on Kim Dot Com, I have very little doubt that in spite of Ninefold's marketing using legal jurisdiction nightmares if you use their major competitors AWS or Rackspace - if the NSA showed up even without local law enforcement on their side, me and my data would likley get "thrown under the bus" (especially in the light of stories like this: https://mailman.stanford.edu/pipermail/liberationtech/2013-J... )