There are already US laws that force providers to comply with warrantshttp://www.cloudwedge.com/2014-us-cloud-providers-suffer-major-legal-setback/"> http://www.cloudwedge.com/2014-us-cloud-providers-suffer-major-legal-setback/ .

Yet, there are a number of providers (like SpiderOak) that do not store a users key on their server, and therefore do not have access to a users account. Those providers are unable to grant access to the government beyond the often-times 'triple layer' encrypted versions. A user has to be a pretty serious threat to the government to warrant them attempting to begin decrypting their files...