The Situation at the Us-Mexico Border Is a Crisis – but Is It New? The vast majority of the migrating families, and almost all (95%) of the unaccompanied children, are coming from El Salvador, Guatemala, Honduras and Mexico. There is a crisis. Children and families have been fleeing to the U.S. for years, particularly from Mexico and the so-called Northern Triangle countries of El Salvador, Guatemala and Honduras. Yet aspects of the current situation are different from the past. And whether more individuals are attempting to cross the U.S.-Mexico border “than have been in the last 20 years,” as Homeland Security Secretary Alejandro Mayorkas predicted, remains to be seen.