I don't think this is the way countries should conduct themselves, particularly not ones which trumpet their freedom and liberty. Either the US can employ cynical realpolitik while making hypocritical statements about fighting for civilisation and freedom and live with the consequences, or it can aspire to live up to the ideals it claims to stand for. There's only so much hypocrisy you can employ as an empire before the hollow nature of your statements undermines your authority with allies and citizens alike, and exposure like this is inevitable when the lie becomes big enough.

but God knows what all the domestic spying is used for

I imagine for exactly the same ends, minus the military aspect, which is reserved for overseas at present (though also employed on US citizens abroad). If a politician wants to dismantle the extremely useful and effective spy apparatus, they are likely to find it turned against them first.