Not selling USA cards on site may reduce numbers. Some states require kids sign up through their club. Some clubs have not even renewed their annual dues yet - therefore are not a 2008/09 club. Just an FYI. Also they may not get their card back in time
which also may create some issues unless the tournament directors have a list of kids from every state involved. It only takes one kid who says he has his card - but doesn't really have one. If that person got hurt it would or could be a problem.