Other big wins:
2002 World Cup, U.S. beat Portugal 3-2.
1994 World Cup, U.S. beat Colombia 2-1...ok, so a Colombian player scored an own goal and was ******** upon his return home. :(
As for Mexico, the U.S. has been beating them a lot lately. Since 2000: 9 wins, 2 losses, 1 draw.