After defeating England 1-1, the United States ties Slovenia 3-2 after the worst refereeing decision in a World Cup since Maradona's Hand of God. I don't think any referee can be unintentionally that bad, and I think the game should be looked at for match fixing via the referee.
FIFA has at least given referee Couliabaly an expediated performance review, however what they really should have is an investigation into betting on the USA vs. Slovenia game. I find it hard to believe that any referee could be that bad on accident. Match fixing is a serious problem in world soccer. If I was FIFA:
a) Couliabaly would never work again,
b) I would have an investigation looking at who placed bets on USA vs. Slovenia,
c) I would lock up all World Cup referees in a gilded cage and monitor their phone calls to be 100% sure on all subsequent matches