Fermina Lopez Cash, a 47-year-old woman from Guatemala, sits in her home with a photo of her 13-year-old son, Omar, who died in July 2010 in the Arizona desert trying to cross the US-Mexico border to join her and his older siblings in Phoenix. Only 9 years old when she left, Lopez Cash said Omar begged to come to the US as well. A middle-aged woman offered to come with him, and they hired a "coyote" (smuggler) to take them across the border. Almost three years later, the remains of a teenage boy that had been found in the Arizona desert along with those of an older woman, were confirmed as those of Fermina's son.

Mike Wilson, a volunteer with the Tucson, Arizona-based Humane Borders, places containers of water in the desert in the hope of preventing more migrant deaths and leads search missions for families looking for loved ones. Wilson is a member of the Tohono O'odham Nation, on whose reservation many of the migrants have died. Members of his tribe and the congregation he used to serve as a pastor, he said, have criticized him for trying to save lives of people who are breaking federal immigration laws. "As your pastor, I have to choose between two sets of law," he tells them. "Which law is above the other? Federal immigration laws or God's moral, universal law that you take care of the stranger?"

In 2010, border guards beat and shocked Anastasio Hernandez Rojas with a stun gun at the San Ysidro port of entry near San Diego, California. He died three days later. An autopsy report ruled his death a homicide, with hypertension and methamphetamines as contributing factors. Rojas had been deported a few months earlier and was apprehended when he tried to rejoin his family, including his wife, Maria Puga, and their 7-year-old twins, Daniela and Daniel, pictured here near the wall where their father was beaten. Puga, who has successfully demanded a governmental investigation into her husband's death, says, "I want my kids to grow up peacefully, not with bitterness. That is why I continue to search for justice."

Angie and Peter Kim came to the United States from South Korea with their parents when they were 9 and 7 years old respectively. According to them, their grandmother, a US citizen, had petitioned for their family, they said, but after years of waiting due to a backlog of visas, she died just before they could complete the process. When their father became a permanent resident through marriage to a US citizen, he and Peter became permanent residents. Peter is now a US citizen, but Angie was over 21 years old at the time and could not gain legal status. Without congressional action on immigration, she may never become a US citizen like her brother. Angie knows that in some ways she is lucky. "I'm able to sit next to my brother right now but I know...children, or parents who are literally separated from each other."

Marta Garcia left Mexico for the United States more than 20 years ago, settling in California with her husband and her three children, all US citizens. Marta said her application to gain legal status through her husband was pending, and she thought she could reenter the US legally after leaving to take care of her dying mother in Mexico. But she was arrested by immigration authorities and ultimately deported. Under current law, Marta has little hope of legally rejoining her family in the US. Sitting in a migrant shelter in Tijuana, Mexico in August 2013, she said, "I want to be with my children and watch them succeed."

Alma D. Isais Aguilar, a Catholic nun, works with the Kino Border Initiative, a group that provides food and shelter to migrants in the border town of Nogales, Mexico. Sister Alma reports that until recently, the migrants she encountered were typically heading north for the first time, but that increasingly they are long-term US residents, newly deported and desperate to return to families north of the border.

Alina Diaz, a farmworker advocate, with Lidia Franco, Gisela Castillo and Marilu Nava-Cervantes, members of the Alianza Nacional de Campesinas, a national organization that mobilizes farmworker women around the country to engage with policymakers about workplace abuses, including unpaid wages, pesticide exposure, and sexual harassment. Once an undocumented immigrant herself, Diaz is now a US citizen. For her, the farmworkers in her community are "already great citizens" in all but name. She dreams that one day they will go to Washington, not to "demand and scream and march," but to commemorate victory, to say, "Thank you, because you are giving me dignity, because you are treating me as a human being."

Hilarion Warren Joseph, 46, a decorated veteran of the first Gulf War and a longtime lawful permanent resident, with his 13-year-old son, Japeri, who wears the jacket from Joseph's US Army uniform. After the war, Joseph said he suffered from post-traumatic stress disorder and attempted suicide three times. He was eventually convicted of transporting guns without a license, which ultimately led the US government to seek to deport him for an "aggravated felony." After three years of immigration detention and litigation, Joseph was able to fight deportation, and now lives with his son Japeri in Brooklyn, New York. But he knows many veterans are not so fortunate and end up exiled from the country they served.