Pfffft. Chile, while good, is not the world power that Brazil and Argentina are; and while Costa Rica and Uruguay are plucky, you lot should have no trouble defeating them.
We, meanwhile, have to face juggernauts Germany, Portugal (with arguably the #1 player in the world), and Ghana, who beat us the last two World Cup outings. You might argue that the United States is not the same calibre as South America or Europe, and you'd probably be right, except we won CONCACAAF handily.