The United States' entire 30-man provisional World Cup roster will join the team for training camp in Palo Alto, CA on May 14, Jurgen Klinsmann has decided. Originally, Klinsmann had said that the camp would likely have 26 to 28 players, but now it will be everyone eligible to play in Brazil.
Klinsmann has already said that he has basically decided who will make the provisional roster. He has insisted that the decisions are made based on the last 2.5 years, not just current form, so having an idea of what the team will look like makes sense.
Taking all 30 players to training camp also fits Kliinsmann's M.O. While he had said before that it would likely be a 26-28-man camp, he has always insisted on the need for competition and bringing more players fits that.
It is unlikely that Klinsmann will announce the 30 players before he has to submit the roster to FIFA on May 13. He has said many times that it makes no sense to release rosters before it is necessary to and because players will have club matches on May 11 and 12, he will want to make sure nobody is injured that weekend before making his roster public.
Klinsmann has to give FIFA his provisional roster on May 13 and a final 23-man roster for the World Cup on June 2. He has not said whether he will carry the full 30 players through training camp and the three pre-World Cup friendlies or if he will make cuts periodically throughout camp.