The United States has countless numbers of unearthed gems that will never get discovered. Some go unnoticed because of financial situations, others get passed over because they don't fit the mold. Whatever the case, players are slipping through the cracks - the only question is how many of them are doing so.
Here's a good story from Culture of Soccer of a brother and sister pair born and raised in the farming communities of central California who are getting their shot for Mexico, Amber and Alexis Hernandez.
The US may still reap the rewards from the Alexis, as he has apparently been contacted by US Soccer.