Age of consent is a silly notion, IMO. As I've stated many times before, there are young girls perfectly capable of making rational, informed* decisions about who, what, how, why and where to fuck. There are plenty of college girls who are completely ill-equipped to make rational decisions regarding same. No two people are the same, and that's something that ages of consent intentionally gloss over in favor of what the majority feels isn't icky.
Furthermore, the American aspect of it is entirely dictated by Christian guilt. We've put such a stigma on getting laid in this country that the mere thought of teenagers wanting to get off is automatically met with horror. Spain recently raised their AoC to 14, and I haven't heard of any major issues they have going on. A big chunk of the world has a much more relaxed attitude towards sexuality, and looking at how things have turned out over here, I'd say that they're on to something.
*Sadly, the informed part seems to be one of the things that the Right in this country want to do everything possible to do away with.