When you compare the American system of registering to vote to that of other countries, it's easy to see why. In America, registering is solely the responsibility of the individual. Whereas in other countries, there's much better voting encouragement and even compulsory voting in some places. So, what could America do to increase the amount of voters?
Personally, I believe one solution in which America could increase their voter turnout is by removing the "burden" from the individual. I have many friends who have just gone through the voter's registration process for the first time. And many who haven't. But while they all have their reasoning, not one of them said it was because they didn't want to vote. When kids turn 18, they don't just magically turn into adults who have time management down to a science (how many adults actually do?) or even start to think about the fact that they're legally adult in the eyes of the law. Many people just simply forgot, or maybe there wasn't time for them to go register, I mean, many probably didn't know how. So, by having a system of a voter registration that took the pressure off the individual, America would see a much greater number of its people at the poles, being able to speak freely and use their rights as a citizen. This could even be handled at the time of getting a drivers license (with an option for them to opt out of course, as it is their right). Now, of course they wouldn't be able to vote until they turned of age, but it'd already have people pre-registered when elections roll around, all they'd be required to do is show a valid form of i.d. Those who don't get their license would of course be left out of this system, but they of course should be given easier access to voter registration as well.
But hey, maybe it's a system that wouldn't work or maybe even backfire, but I think there's no doubt in anyone's mind that more Americans should be voting. So a solution should be looked for, and if you think my idea isn't viable or necessary (or even if you agree with me!), I'd love to know.