Isidra Calderon hugs her son Jonathan Avila, who was sent back from detention on Tuesday, after they were separated at the U.S. border, in Guatemala City, Guatemala August 7, 2018.

Elsa Ortiz (L), who had been separated from her son Anthony David Tobar at the U.S. border under U.S. President Donald Trump's "zero tolerance" immigration policy, holds him inside a car after he was deported from the U.S., in Guatemala City, Guatemala August 14, 2018. The writing on the windshield reads "Jesus Christ, God guide me." Picture taken August 14, 2018. REUTERS/Luis Echeverria

Yeni Gonzalez Garcia, a Guatemalan mother who had been separated from her children, exits the Cayuga Center after being reunited with them in New York City, U.S., July 13, 2018.

Rolando Bueso, 37, a deportee under the Trump administration's hardline immigration policy, his son Johan, 15 months, who remained at an Arizona shelter for five months after they were separated, and Adalicia Montecino, 21, Johan's mother, smile as they prepare for a photo outside their house in La Libertad, in Comayagua state Honduras July 27, 2018. Picture taken on July 27, 2018.

REFILE - CORRECTING DURATION OF SEPARATION Walter Armando Jimenez Melendez, an asylum seeker from El Salvador, arrives with his four year-old son Jeremy at La Posada Providencia shelter in San Benito, Texas, U.S., shortly after he said they were reunited following separation since late May while in detention July 10, 2018.

Anthony David Tobar (L), who was separated from his mother at the U.S. border under U.S. President Donald Trump's "zero tolerance" immigration policy, greets family members after his deportation, in Guatemala City, Guatemala August 14, 2018. Picture taken August 14, 2018.

Isabela, an asylum seeker from El Salvador, hugs her 17-year-old daughter Dayana outside of Casa Esperanza, a federal contracted shelter in Brownsville, Texas, U.S., shortly after being reunited with her following their separation at the U.S.-Mexico border, July 11, 2018.

Yolany Padilla, an asylum seeker from Honduras, is reunified with her six-year-old son Jeslin as Leta Sanchez (R) and Jorge Baron (L) look on at Sea-Tac airport in Seattle, Washington, U.S., July 14, 2018.

Gilberto Calmo hugs his son Franklin Noe Calmo, who was sent back from detention on Tuesday, after they were separated at the U.S. border, in Guatemala City, Guatemala August 7, 2018.

Isabela, an asylum seeker from El Salvador, hugs her 17-year-old daughter Dayana outside of Casa Esperanza, a federal contracted shelter in Brownsville, Texas, U.S., shortly after being reunited with her following their separation at the U.S.-Mexico border July 11, 2018.

Walter Armando Jimenez Melendez, an asylum seeker from El Salvador, arrives with his four year-old son Jeremy at La Posada Providencia shelter in San Benito, Texas, U.S., shortly after he said they were reunited following separation since late May while in detention July 10, 2018.

Javier, a 30 year old from Honduras, holds his 4 year old son William during a media availability in New York after they were reunited after being separated for 55 days following their detention at the Texas border, U.S., July 11, 2018.

Anita Areli Ramirez Mejia, an asylum seeker from Honduras separated from her six year-old son Jenri near the Mexico-U.S. border, is reunited with him in Harlingen, Texas, U.S., July 13, 2018. Picture taken July 13, 2018.

Raul Sub hugs his son Abner, who was sent back from detention on Tuesday, after they were separated at the U.S. border, in Guatemala City, Guatemala August 7, 2018.

Adan, a 26 year old from Guatemala holds his 4 year old son, Juan, during a media availability in New York U.S. after they were reunited after being separated for 58 days following their detention on the Arizona border, July 11, 2018.

Rosayra Pablo-Cruz, a Guatemalan mother who had been separated from her two sons, exits the Cayuga Center after being reunited with them in New York City, U.S., July 13, 2018.

Javier (L), a 30 year old from Honduras, holds his 4 year old son William and Adan, a 26 year old from Guatemala sits next to his 4 year old son, Juan, during a media availability in New York U.S. after they were reunited following being detained and separated at the southern United States border, July 11, 2018.

Isabela, an asylum seeker from El Salvador, hugs her 17-year-old daughter Dayana outside of Casa Esperanza, a federal contracted shelter in Brownsville, Texas, U.S., shortly after being reunited with her following their separation at the U.S.-Mexico border, July 11, 2018.

After being reunited, Christhel Nohelia Barahona Sanchez, 15, and her mother Sandra Elizabeth Sanchez, of Honduras, speak with media at Catholic Charities in San Antonio, Texas, U.S., July 26, 2018.

Children Mayra Gregorio and Filomena Jacinto are pictured after being sent back from detention on Tuesday, after they were separated from their parents at the U.S. border, in Guatemala City, Guatemala August 7, 2018.