John Moore has spent much of the last decade photographing issues of undocumented immigration to the United States from Central America and Mexico. He has focused on asylum seekers fleeing violence, migrants searching for economic opportunity, and the U.S. federal government’s response to pursue, detain, and deport them. He has photographed throughout Central America, Mexico and in immigrant communities across the U.S. Throughout, Moore has aimed to communicate the humanity of this story. His comprehensive and nuanced approach puts a human face on one of the most debated issues in America today.

In June of last year, Moore photographed immigrants crossing the border after the Trump administration implemented its “zero tolerance” policy. Pictures on that trip of a toddler crying as her mother was searched and detained were published globally. Under intense public pressure, the following week Donald Trump ended his administration’s family separation policy. In April of this year Moore’s iconic image “Crying Girl on the Border” was awarded the World Press Photo of the Year.

The U.S. government continues to remake immigration policy. At the same time, thousands of Central Americans still choose to take the arduous journey north, and millions of undocumented families in America live in fear. Their story is far from over.