The United States men's national team had not lost to the Guatemala national team since 1988. Let's take a look at some of the things that have changed since then: Ronald Reagan is no longer president—in fact, he has since passed away—we have seen seven Olympic games, seven World Cups and 28 Super Bowls, and Guatemala's bloody civil war ended, with peace ensuing after years of conflict.
But most important in this context is the USMNT. They went through six managers and are currently on their seventh, improving exponentially as soccer in this country grew.