Yep, and has exactly the same "company officers residing in the US" exposure to the NSA and any of the agencies fighting the war on [drugs|terrorism|pedos|political-rivals] getting closed or open court warrants with or without gag orders.

In fact Dropbox is doubly at risk, law enforcement or national security could target either (or both) Dropbox themselves - go straight to Amazon to get access at hypervisor level to their entire infrastructure.