into custody on June 12, 2018 near McAllen, Texas. (Photo by John Moore/Getty Images)

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A two-year-old Honduran asylum seeker cries as her mother is searched and detained near the U.S.-Mexico border on June 12, 2018 in McAllen, Texas. (Photo by John Moore/Getty Images)

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U.S. Border Patrol agents detain a group of Central American asylum seekers near the U.S.-Mexico border on June 12, 2018 in McAllen, Texas. (Photo by John Moore/Getty Images)

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A U.S. Border Patrol vehicle illuminates a group of Central American asylum seekers before taking them into custody near the U.S.-Mexico border on June 12, 2018 in McAllen, Texas. (Photo by John Moore/Getty Images)

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A Honduran mother holds her two-year-old daughter while being detained by U.S. Border Patrol agents near the U.S.-Mexico border on June 12, 2018 in McAllen, Texas. (Photoby John Moore/Getty Images)

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Central American asylum seekers wait for transport while being detained by U.S. Border Patrol agents near the U.S.-Mexico border on June 12, 2018 in McAllen, Texas. (Photo by John Moore/Getty Images)

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A U.S. Border Patrol spotlight shines on a terrified mother and son from Honduras as they are found in the dark near the U.S.-Mexico border on June 12, 2018 in McAllen, Texas. (Photo by John Moore/Getty Images)

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An undocumented immigrant is given water by U.S. Border Patrol agents after she was aprehended in a sugarcane field near the U.S.-Mexico Border on June 12, 2018 near Mission, Texas. (Photo by John Moore/Getty Images)

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Central American asylum seekers wait as U.S. Border Patrol agents take them into custody on June 12, 2018 near McAllen, Texas. (Photo by John Moore/Getty