A law enforcement officer stands by the opening of a cross-border tunnel on Monday, May 16, 2022 between Mexico's Tijuana into the San Diego area. Authorities have announced the discovery of the underground smuggling tunnel on Mexico's border, running the length of a football field on U.S. soil to a warehouse in an industrial area. The cross-border tunnel from Tijuana to the San Diego area was built in one of the most fortified stretches of the border, illustrating the limitations of former President Donald Trump's border wall. (AP Photo/Elliot Spagat)