The whole purpose of the US National Team Development Program is to build a team that can represent the US in international tournaments. So it comes as no surprise that virtually all the US players at the U18 and U20 championships have gone through the program. That said, right now there's a few players on the regular-season U18 team that didn't make the cut for the U18 championships (some U17 players went instead). Forward John Henrion told me that the players who are there are remembering those who aren't by putting and extra white stripe of tape on their right legs.
Above, Kevin Lynch prepares to take a faceoff.