"Democracy" is a fairly amorphous term. We don't have anything like a democracy in the United States. We have elements of democracy mixed with elements of republicanism mixed with elements of rule by a technocracy. Mediating all of these elements is a system of referees (the legal system) that is anything but democratic.
If you look at how hard governance is, and how badly most countries do it, it's actually a pretty great system. Baroque, complex, inefficient, sure, but there is little to suggest that any system of governance for 300 million people would be anything other than those things.
If you look at how hard governance is, and how badly most countries do it, it's actually a pretty great system. Baroque, complex, inefficient, sure, but there is little to suggest that any system of governance for 300 million people would be anything other than those things.