Josh Axelrod

Many dangers await migrants who attempt to cross the border from Mexico into the U.S. Hundreds die each year, faced with dehydration, hypothermia and drowning. Many more go missing along the route, separated from their group.

Maria Ochoa is part of an organization called the Tucson Samaritans. She helps migrants along the way who are stranded or in danger. She brings them food, water and medical assistance.

This Sunday, as sisters Estela and Candi Reyes mark Father's Day, they will be thinking of their dad, Juan, who died in 2010.

Juan Reyes was born in Mexico and immigrated to the U.S. in the 1940s, eventually settling his family in El Paso, Texas. Estela, 50, and Candi, 46, adored their dad, and at StoryCorps in 2012, they recall the lasting influence he had on them.

"Papito era lo máximo," Estela said. "He was everything to us."

Growing up in El Paso, Estela remembers Juan was a "tough guy."

With climate activists cheering on the Green New Deal, former Texas Rep. Beto O'Rourke is borrowing a different allusion from American history.

"We've called for ... an investment commensurate with John F. Kennedy's moonshot," O'Rourke told NPR. "We're going to invest in the technologies that will allow us to lead the world on this. It should be happening right here in the United States."

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