DC United does have youth teams down to U-11. In fact one of the players is Barron Trump. So does every other MLS team.
Joe, this is not specifically to you but does include you, do some simple research before commenting.
We also have Montgomery Soccer Inc, Olney Boys and Girls Club and who knows what else fielding youth soccer in Montgomery County, MD. My grandson plays in a rec league and every one on his team is one footed when kicking the ball. I've seen no attempt to teach the kids to use the other (left) foot. It's horde soccer out there. They're not learning skills. If that is a typical U10 team in our county, that is not good.