You people who are suggesting that the refs are making bad calls on purpose just to get back at the Americans for whatever political reason are out of your rabid minds. It's not because of politics, it's not because it's the USA, it has nothing to do with the placement in the group, nor has it anything to do with FIFA fixing the score to ensure adequate audience for the remainder of the World Cup!
People who are used to watching Soccer (Aside from just the MLS), know that the human element in refereeing sometimes end up making an impact in the outcome of the game. Call it stupid, controversial or lame, whatever. The point is that these types of bad calls are common in soccer across all league, including the English Premier league, Italian Serie A, and the German Bundesliga alike.
The ref bade a HORRIBLE call, but PLEASE stop making it into more than what it was... just another bad call.
That's no excuse for letting bad calls dictate the outcome of games. They need to make some changes to the system. Sports such as basketball and football (yes, American football; soccer is soccer - I don't care what the rest of the world calls it) are susceptible to this as well, but to a much lesser extent.