Really, primary thing I dislike about the US (relative to other countries) is that we have a huge (and growing) underclass, just like in places like Brazil and Mexico. We need to shrink (ideally, eliminate, at least as a multi-generational thing) that group (there's no single solution -- but blindly cutting down the successful would be worse than what we have now. Some combination of better education and healthcare is part of it, and I support negative population growth in the world in general and the US in specific.)

US foreign policy is a bit too interventionist for my taste, but I'd prefer it to pure pacifism. A better-armed UK or France is probably a reasonable compromise for that. However, most US foreign interventions (except Iraq) aren't that horrible for most citizens (and even Iraq wasn't that much worse than Iraq 1991-2003 or 1980-1988) of the foreign countries, certainly compared to invasions and occupations by other countries.