From left, Elmer de la. Rosa, Orlando Jose Reyes and Carlos Lanza stand near the perimeter of the migrant shelter in Piedras Negras, Coahuila. Feb. 9, 2019. Miguel Gutierrez Jr./The Texas Tribune
       
     
 A young boy stands by the fence at the migrant shelter in Piedras Negras, Coahuila. Feb. 9, 2019. Miguel Gutierrez Jr./The Texas Tribune
       
     
 The Mexican military guards the perimieter of the shelter where an estimated 1700 migrants are currently being held in Piedras Negras, across the border from Eagle Pass. Feb. 9, 2019. Miguel Gutierrez Jr./The Texas Tribune
       
     
 Moises Santos Canales, 17, of La Ceiba Antlantida, Honduras, has been detained at the migrant shelter in Piedras Negras for a week. He previously spent five months in Tapachula, near the Mexico and Guatemala border. When asked about the caravan, Can
       
     
 The Mexican military guards the perimieter of the shelter where an estimated 1700 migrants are currently being held in Piedras Negras. Feb. 12, 2019. Miguel Gutierrez Jr./The Texas Tribune
       
     
 Maybery Velazquez, 6, traveled with her father, Mauricio Velazquez, 27, for 18 days from Progreso de Oro, Honduras. When asked about their situation, Mauricio said, “We want to leave this shelter. We don’t want Mexican papers. We want the American d
       
     
 Jose David Martinez, 29, from Honduras, hands an item to a person inside the migrant shelter in Piedras Negras, Coahuila. Certain migrants are allowed to leave the facility and purchase items in a trailer located next to the shelter. Feb. 9, 2019. M
       
     
 During the previous week, the migrant shelter in Piedras Negras housed an estimated 1700 migrants. Currently, approximately 700 migrants remain at the facility. The location is an abandoned warehouse that was turned into a shelter to accomodate the
       
     
 A man hold a baby on his shoulder at the migrant shelter in Piedras Negras, Coahuila on Feb. 18, 2019. Miguel Gutierrez Jr./The Texas Tribune
       
     
 A young boy sits by the fence of the migrant shelter in Piedras Negras, Coahuila. There are an estimated 700 migrants remaining at the shelter. A decrease from 1700 migrants on Feb 4., 2019.The shelter is slated to close later this week. Feb. 18, 20
       
     
 Migrants wait in line to purchase food items from a trailer located outside of the shelter where they’re currently being held. According to José Luis Pliego Corona, the Secretario de Seguridad Pública of Coahuila, an estimated 1700 to 1800 migrants
       
     
 A young migrant reaches for food and coffee from a shelter employee in Piedras Negras. Feb. 18, 2019. Miguel Gutierrez Jr./The Texas Tribune
       
     
 Iris Portillo and her daughter, Daniela Portillo, share a hug inside the migrant shelter in Piedras Negras. The shelter is slated to close later this week. Feb. 18, 2019. Miguel Gutierrez Jr./The Texas Tribune
       
     
 U.S. border patrol and Texas DPS park on the banks of the Rio Grande in Eagle Pass. Texas State Troopers and U.S. Border Patrol agents were dispatched to the region in response to a migrant caravan in Piedras Negras, Coahuila. Feb. 9, 2019. Miguel G
       
     
 A U.S. border patrol truck is parked on the banks of the Rio Grande. Feb. 9, 2019. Miguel Gutierrez Jr./The Texas Tribune
       
     
 From left, Elmer de la. Rosa, Orlando Jose Reyes and Carlos Lanza stand near the perimeter of the migrant shelter in Piedras Negras, Coahuila. Feb. 9, 2019. Miguel Gutierrez Jr./The Texas Tribune
       
     

From left, Elmer de la. Rosa, Orlando Jose Reyes and Carlos Lanza stand near the perimeter of the migrant shelter in Piedras Negras, Coahuila. Feb. 9, 2019. Miguel Gutierrez Jr./The Texas Tribune

 A young boy stands by the fence at the migrant shelter in Piedras Negras, Coahuila. Feb. 9, 2019. Miguel Gutierrez Jr./The Texas Tribune
       
     

A young boy stands by the fence at the migrant shelter in Piedras Negras, Coahuila. Feb. 9, 2019. Miguel Gutierrez Jr./The Texas Tribune

 The Mexican military guards the perimieter of the shelter where an estimated 1700 migrants are currently being held in Piedras Negras, across the border from Eagle Pass. Feb. 9, 2019. Miguel Gutierrez Jr./The Texas Tribune
       
     

The Mexican military guards the perimieter of the shelter where an estimated 1700 migrants are currently being held in Piedras Negras, across the border from Eagle Pass. Feb. 9, 2019. Miguel Gutierrez Jr./The Texas Tribune

 Moises Santos Canales, 17, of La Ceiba Antlantida, Honduras, has been detained at the migrant shelter in Piedras Negras for a week. He previously spent five months in Tapachula, near the Mexico and Guatemala border. When asked about the caravan, Can
       
     

Moises Santos Canales, 17, of La Ceiba Antlantida, Honduras, has been detained at the migrant shelter in Piedras Negras for a week. He previously spent five months in Tapachula, near the Mexico and Guatemala border. When asked about the caravan, Canales stated, “We are not delinquents. When we go out to buy food, they escort us with police. We don’t have anything. I just want to work in the U.S. and send money to my grandmother in Honduras.” Feb 9, 2019. Miguel Gutierrez Jr./The Texas Tribune

 The Mexican military guards the perimieter of the shelter where an estimated 1700 migrants are currently being held in Piedras Negras. Feb. 12, 2019. Miguel Gutierrez Jr./The Texas Tribune
       
     

The Mexican military guards the perimieter of the shelter where an estimated 1700 migrants are currently being held in Piedras Negras. Feb. 12, 2019. Miguel Gutierrez Jr./The Texas Tribune

 Maybery Velazquez, 6, traveled with her father, Mauricio Velazquez, 27, for 18 days from Progreso de Oro, Honduras. When asked about their situation, Mauricio said, “We want to leave this shelter. We don’t want Mexican papers. We want the American d
       
     

Maybery Velazquez, 6, traveled with her father, Mauricio Velazquez, 27, for 18 days from Progreso de Oro, Honduras. When asked about their situation, Mauricio said, “We want to leave this shelter. We don’t want Mexican papers. We want the American dream. It’s very tense in here. People want to leave.” Miguel Gutierrez Jr./The Texas Tribune

 Jose David Martinez, 29, from Honduras, hands an item to a person inside the migrant shelter in Piedras Negras, Coahuila. Certain migrants are allowed to leave the facility and purchase items in a trailer located next to the shelter. Feb. 9, 2019. M
       
     

Jose David Martinez, 29, from Honduras, hands an item to a person inside the migrant shelter in Piedras Negras, Coahuila. Certain migrants are allowed to leave the facility and purchase items in a trailer located next to the shelter. Feb. 9, 2019. Miguel Gutierrez Jr./The Texas Tribune

 During the previous week, the migrant shelter in Piedras Negras housed an estimated 1700 migrants. Currently, approximately 700 migrants remain at the facility. The location is an abandoned warehouse that was turned into a shelter to accomodate the
       
     

During the previous week, the migrant shelter in Piedras Negras housed an estimated 1700 migrants. Currently, approximately 700 migrants remain at the facility. The location is an abandoned warehouse that was turned into a shelter to accomodate the migrant caravan. The shelter is slated to close later in the week. Feb. 18, 2019. Miguel Gutierrez Jr./The Texas Tribune

 A man hold a baby on his shoulder at the migrant shelter in Piedras Negras, Coahuila on Feb. 18, 2019. Miguel Gutierrez Jr./The Texas Tribune
       
     

A man hold a baby on his shoulder at the migrant shelter in Piedras Negras, Coahuila on Feb. 18, 2019. Miguel Gutierrez Jr./The Texas Tribune

 A young boy sits by the fence of the migrant shelter in Piedras Negras, Coahuila. There are an estimated 700 migrants remaining at the shelter. A decrease from 1700 migrants on Feb 4., 2019.The shelter is slated to close later this week. Feb. 18, 20
       
     

A young boy sits by the fence of the migrant shelter in Piedras Negras, Coahuila. There are an estimated 700 migrants remaining at the shelter. A decrease from 1700 migrants on Feb 4., 2019.The shelter is slated to close later this week. Feb. 18, 2019. Miguel Gutierrez Jr./The Texas Tribune

 Migrants wait in line to purchase food items from a trailer located outside of the shelter where they’re currently being held. According to José Luis Pliego Corona, the Secretario de Seguridad Pública of Coahuila, an estimated 1700 to 1800 migrants
       
     

Migrants wait in line to purchase food items from a trailer located outside of the shelter where they’re currently being held. According to José Luis Pliego Corona, the Secretario de Seguridad Pública of Coahuila, an estimated 1700 to 1800 migrants are currently at the shelter. Feb. 9, 2019. Miguel Gutierrez Jr./The Texas Tribune

 A young migrant reaches for food and coffee from a shelter employee in Piedras Negras. Feb. 18, 2019. Miguel Gutierrez Jr./The Texas Tribune
       
     

A young migrant reaches for food and coffee from a shelter employee in Piedras Negras. Feb. 18, 2019. Miguel Gutierrez Jr./The Texas Tribune

 Iris Portillo and her daughter, Daniela Portillo, share a hug inside the migrant shelter in Piedras Negras. The shelter is slated to close later this week. Feb. 18, 2019. Miguel Gutierrez Jr./The Texas Tribune
       
     

Iris Portillo and her daughter, Daniela Portillo, share a hug inside the migrant shelter in Piedras Negras. The shelter is slated to close later this week. Feb. 18, 2019. Miguel Gutierrez Jr./The Texas Tribune

 U.S. border patrol and Texas DPS park on the banks of the Rio Grande in Eagle Pass. Texas State Troopers and U.S. Border Patrol agents were dispatched to the region in response to a migrant caravan in Piedras Negras, Coahuila. Feb. 9, 2019. Miguel G
       
     

U.S. border patrol and Texas DPS park on the banks of the Rio Grande in Eagle Pass. Texas State Troopers and U.S. Border Patrol agents were dispatched to the region in response to a migrant caravan in Piedras Negras, Coahuila. Feb. 9, 2019. Miguel Gutierrez Jr./The Texas Tribune

 A U.S. border patrol truck is parked on the banks of the Rio Grande. Feb. 9, 2019. Miguel Gutierrez Jr./The Texas Tribune
       
     

A U.S. border patrol truck is parked on the banks of the Rio Grande. Feb. 9, 2019. Miguel Gutierrez Jr./The Texas Tribune