The U.S. is particularly sensitive to government encroachment... registries are a hard no-go, never will be accepted, I'm frankly somewhat surprised the sex offender registry exists (think of the children), despite its' flaws. Also, they don't tend to work well for home defense when locked in a safe (as you mention). I don't own a gun, but am very pro the right to do so.

I consider myself a pragmatic Libertarian, so my personal political views don't really align with either of the major parties, but are definitely more conservative in terms of limited federal government than most of the rest of the world view, exceptions to essential infrastructure, which to me includes water, power, communications/internet, transportation, preserving public lands, and education (though in need of some revision). As to corrupt local governments... those are easier for local citizens, and even states to address. Of course historically that hasn't always worked out so well.

In the end, what keeps Germany from being corrupted vs. Belgium... the States in the U.S. are slightly more coupled than the EU nations, but it's not too dissimilar, discounting the same language for the most part here.