Why switch loyalties when the USA is out? Rooting for Mexico just helps a rival win and cheapens your own fan identity.
Discipline governs the soul; when the home team falters, switch not loyalties. Rooting for Mexico betrays your own identity and weakens your duty as a steadfast fan.
Once the USA is out, we honor the game by cheering the better craft. Curiosity trumps tribal pride, and Mexico's flair lets the sport teach us humility and wonder.