Isabel Gonzalez, 63, (center) a Tijuana resident and one of the firsts non essential travelers to cross to the United States, walk into the US side of the San Ysidro crossing port on the Mexico-United States border seen from Tijuana, Baja California state, Mexico, on November 8, 2021. – The United States reopened its land and air borders Monday to foreign visitors fully vaccinated against Covid-19, ending 20 months of travel restrictions that separated families, hobbled tourism and strained diplomatic ties. (Photo by Guillermo Arias / AFP)