It's only a matter of time until the US starts to get some true soccer stars. In many areas in the US, 10 years ago - to play soccer as a child was not an option. Very few places, schools and such offered soccer - usually either baceball/t-ball, basketball, or (american) football - with some areas of the colder states possible offering hockey.
But today, many areas & schools have soccer teams for children to join - to play and gain their skills throughout their youth - and in the next 5 years or so, you will start to see some true US soccer stars start to form.... and possible have the US to become a true threat as a soccer powerhouse. (but this is still at least 5 years away, if not 10 years...)