U.S. Energy Secretary Rick Perry, left, and Mexico's Secretary of Energy Pedro Joaquin Coldwell, talk after making a joint statement in Mexico City, Thursday, July 13, 2017. (AP Photo/Eduardo Verdugo)
U.S. Energy Secretary Rick Perry speaks during a joint statement with his Mexican counterpart, in Mexico City, Thursday, July 13, 2017. (AP Photo/Eduardo Verdugo)