Palomas Mensajeras or Messenger Pigeons is a program run by the state of Michoacan, Mexico that brings together elderly Michoacan residents with their undocumented children in the U.S. Thousands have traveled to the United States to be reunited with their

GERMANTOWN, IL - MAY 11: Maria Dominga Romero Leon, 68, opens the door to her family's car in Germantown, IL as they leave for a birthday party in nearby St. Louis, Missouri. Others, from left to right are Abdias Guardian, 39, Chelsy Guardian, 18, and Guillermina Sanchez, 38. Palomas Mensajeras or Messenger Pigeons is a program run by the state of Michoacan, Mexico that brings together elderly Michoacan residents with their undocumented children in the U.S. Thousands have traveled to the United States to be reunited with their families. The latest group of 22 seniors flew to Chicago in May. (Photo by Sarah L. Voisin/The Washington Post via Getty Images)