2beers:
The US Government has said they would not turn off GPS. It is a utility that is so widely used in the USA and other parts of the world that the effect of turning it off on the civil economy would be pretty large.
They are in fact adding more features to the system to provide better accuracy for civil use, and will continue to support it for many years.
GPS already has integrity features built in - the European system adds many things, but GPS is still quite useful (and will be free - how much are the Europeans going to charge for use???)