OK, I'm a European and not massively fond of the US military, but I am going to take exception to this.
The Galileo *civilian* band originally overlapped with the US *military* band. In other words, you could buy an over the counter device that could guide a weapon to a specific grid reference in an area the US was fighting a war. Remember the rocket forces Hezbollah were able to deploy against Israel? Imagine that with GPS targetting that you can't jam without blinding your own forces.
The US asked ESA to pretty-please-with-sugar-on-top not make consumer devices that had dual uses killing US servicemen. ESA said 'ooh, go on you old rascal' and moved the band.
Now, the situation is that both Navstar (the actual name for US GPS; GPS is just the generic name for such a system) and Galileo have civilian and military bands that don't overlap. Either the US and Europe can jam each others signals, completely, without affecting their own military band. Just as the US can achieve exclusive GPS access in Iraq and Afghanistan, France can do just the same when it unilaterally intervenes in one of its old African colonies.
All the change did was move us from a situation where we were screwing the Americans with our network, to one where we have equal power to screw each others network. This doesn't seem massively unreasonable of the US to ask for.
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