For several years now, the United States and Mexico have had a stranglehold on CONCACAF. Aside from the Gold Cup, where only Canada has been able to unseat the region's top two sides, the U.S. and Mexico have been unstoppable, particularly in World Cup qualifying. Since CONCACAF went to the six-team Hexagonal in 1998, the U.S. and Mexico have finished in the top three and have qualified directly to all four World Cups since.