Some of those players on the US U20 team are already capped senior players, Michael Bradley and Freddy Adu among others.
Also, before our B-team (without key playmaker Landon Donovan, Damarcus Beasley, Clint Dempsey, Benny Feilhaber, and the rest of our European lineup) went 0-3 in group stages. The USA defended the Gold Cup, showing that we are the best North American side for many years to come... and we're STILL growing. Might I add that we did not only win those games, we CONVINCINGLY won those games (especially against Mexico).
Moreover, I, along with other football-crazy Americans, am starting to watch the MLS. That's going to be a league that will develop American talent for the superstar European leagues... and I believe that it is better than most Asian leagues, and most second tier European leagues (i.e. Ligue 2, Championship, etc.).
The MLS will never be a superstar league; that's not its purpose. The superstar leagues are in Europe, end of story. But the MLS will train more and more American talent to play (and play WELL) in Europe.
The results aren't here now, but the signs of success are.
Give us 10 years and we'll be there.
The only capped player was Micheal Bradly, Freddy Adu is yet to be capped, get your facts right.