I read through the press release, and I get the impression that this is an economically protective decision that is being marketed as “we’re patriots who care about your safety.”
I have mixed feelings about the economic protectionism element of this. The pro is that the Dollars that would eventually go overseas will be going to AT&T and T-Mobile. The downsides are that for customers, this might be a missed opportunity to save money, and there will be many jobs in support positions and at local retail stores that will not be created.
The security and law enforcement elements, I believe, are non-issues. Somebody correct me if I am wrong, but would organizations that need a high level of security (such as governments) ever trust consumer-grade phone service, particularly one from a “dark horse” carrier?