CIUDAD JUAREZ — Before border pandemic travel restrictions, shoppers from Mexico crossed daily. But during the pandemic more been forced to turn to others to get the products they want or need from the U.S. side of the border. For more than a year, the border between the U.S. and Mexico has been closed to all non-essential travel in an attempt to stop the spread of Covid-19. Some U.S. citizens and legal residents are still going back and forth because the authorities can’t keep them from returning home from Mexico. Mexican citizens with border crossing cards or visas though are only allowed to visit the U.S. for reasons that are essential including work, school or medical appointments.