Rongen was appointed head coach of the Under-20 United States men's national team again in 2006 and led the team to the 2007 FIFA U-20 World Cup and 2009 FIFA U-20 World Cup. He was fired from that position in May 2011 after a series of major gaffes, the most striking being in 2007 when Rongen lost the U.S. national team a future star defender Neven Subotić, a Serbian-American who has since won the Bundesliga and reached the Champions League final, by publicly criticizing him, and subsequently leaving Subotić off the U.S. U-20 World Cup roster.