The measles situation in the U.S. is so bad that the disease is spreading south of the border. Answering a question from a reporter Wednesday, Mexican President Claudia Sheinbaum revealed that the sudden resurgence of measles in Mexico had originated from the United States. “It came mainly from the United States, that’s why it shows up in Chihuahua,” Sheinbaum said . “And in Chihuahua there are communities that don’t get vaccinated at all for any vaccine.” “So it specifically began there, where