EXPLAINER: Questions remain about conditions of migrant kids
Minor children are housed inside a pod at the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley run by U.S. Customs and Border Protection (CBP), in Donna, Texas, Tuesday, March 30, 2021. The minors are housed by the hundreds in eight pods that are about 3,200 square feet in size. Many of the pods had more than 500 children in them. The Biden administration on Tuesday for the first time allowed journalists inside its main detention facility at the border for migrant children, revealing a severely overcrowded tent structure where more than 4,000 kids and families were crammed into pods and the youngest kept in a large play pen with mats on the floor for sleeping.(AP Photo/Dario Lopez-Mills, Pool)

Minor children are housed inside a pod at the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley run by U.S. Customs and Border Protection (CBP), in Donna, Texas, Tuesday, March 30, 2021. The minors are housed by the hundreds in eight pods that are about 3,200 square feet in size. Many of the pods had more than 500 children in them. The Biden administration on Tuesday for the first time allowed journalists inside its main detention facility at the border for migrant children, revealing a severely overcrowded tent structure where more than 4,000 kids and families were crammed into pods and the youngest kept in a large play pen with mats on the floor for sleeping.(AP Photo/Dario Lopez-Mills, Pool)

Mar. 30, 2021 06:00 PM EDT
Young minors play soccer at a small field at the Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley, run by the U.S. Customs and Border Protection (CBP), in Donna, Texas, Tuesday, March 30, 2021. The Biden administration on Tuesday for the first time allowed journalists inside its main detention facility at the border for migrant children, revealing a severely overcrowded tent structure where more than 4,000 kids and families were crammed into pods and the youngest kept in a large play pen with mats on the floor for sleeping.(AP Photo/Dario Lopez-Mills,Pool)

Young minors play soccer at a small field at the Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley, run by the U.S. Customs and Border Protection (CBP), in Donna, Texas, Tuesday, March 30, 2021. The Biden administration on Tuesday for the first time allowed journalists inside its main detention facility at the border for migrant children, revealing a severely overcrowded tent structure where more than 4,000 kids and families were crammed into pods and the youngest kept in a large play pen with mats on the floor for sleeping.(AP Photo/Dario Lopez-Mills,Pool)

Mar. 30, 2021 05:59 PM EDT
A migrant and her daughter have their biometric data entered at the intake area of the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. (AP Photo/Dario Lopez-Mills, Pool)

A migrant and her daughter have their biometric data entered at the intake area of the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. (AP Photo/Dario Lopez-Mills, Pool)

Mar. 30, 2021 05:00 PM EDT
Young unaccompanied migrants, from ages 3 to 9, watch television inside a playpen at the U.S. Customs and Border Protection facility, the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. (AP Photo/Dario Lopez-Mills, Pool)

Young unaccompanied migrants, from ages 3 to 9, watch television inside a playpen at the U.S. Customs and Border Protection facility, the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. (AP Photo/Dario Lopez-Mills, Pool)

Mar. 30, 2021 04:01 PM EDT
Minor children rest inside a pod at the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley run by U.S. Customs and Border Protection (CBP), in Donna, Texas, Tuesday, March 30, 2021. The minors are housed by the hundreds in eight pods that are about 3,200 square feet in size. Many of the pods had more than 500 children in them. The Biden administration on Tuesday for the first time allowed journalists inside its main detention facility at the border for migrant children, revealing a severely overcrowded tent structure where more than 4,000 kids and families were crammed into pods and the youngest kept in a large play pen with mats on the floor for sleeping.(AP Photo/Dario Lopez-Mills, Pool)

Minor children rest inside a pod at the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley run by U.S. Customs and Border Protection (CBP), in Donna, Texas, Tuesday, March 30, 2021. The minors are housed by the hundreds in eight pods that are about 3,200 square feet in size. Many of the pods had more than 500 children in them. The Biden administration on Tuesday for the first time allowed journalists inside its main detention facility at the border for migrant children, revealing a severely overcrowded tent structure where more than 4,000 kids and families were crammed into pods and the youngest kept in a large play pen with mats on the floor for sleeping.(AP Photo/Dario Lopez-Mills, Pool)

Mar. 30, 2021 06:01 PM EDT
Minor children who tested positive for COVID-19 sit in the ground at the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley run by U.S. Customs and Border Protection (CBP), in Donna, Texas, Tuesday, March 30, 2021. The Biden administration on Tuesday for the first time allowed journalists inside its main detention facility at the border for migrant children, revealing a severely overcrowded tent structure where more than 4,000 kids and families were crammed into pods and the youngest kept in a large play pen with mats on the floor for sleeping.(AP Photo/Dario Lopez-Mills, Pool)

Minor children who tested positive for COVID-19 sit in the ground at the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley run by U.S. Customs and Border Protection (CBP), in Donna, Texas, Tuesday, March 30, 2021. The Biden administration on Tuesday for the first time allowed journalists inside its main detention facility at the border for migrant children, revealing a severely overcrowded tent structure where more than 4,000 kids and families were crammed into pods and the youngest kept in a large play pen with mats on the floor for sleeping.(AP Photo/Dario Lopez-Mills, Pool)

Mar. 30, 2021 06:01 PM EDT
Migrants speak to their relatives inside a phone booth after being processed at the intake area of the U.S. Customs and Border Protection facility, the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. (AP Photo/Dario Lopez-Mills, Pool)

Migrants speak to their relatives inside a phone booth after being processed at the intake area of the U.S. Customs and Border Protection facility, the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. (AP Photo/Dario Lopez-Mills, Pool)

Mar. 30, 2021 03:06 PM EDT
A young migrant gets treated for possible lice before entering the intake area at the U.S. Customs and Border Protection facility, the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. (AP Photo/Dario Lopez-Mills, Pool)

A young migrant gets treated for possible lice before entering the intake area at the U.S. Customs and Border Protection facility, the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. (AP Photo/Dario Lopez-Mills, Pool)

Mar. 30, 2021 03:04 PM EDT
A young migrant waits for his turn to take a shower at the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. (AP Photo/Dario Lopez-Mills, Pool)

A young migrant waits for his turn to take a shower at the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. (AP Photo/Dario Lopez-Mills, Pool)

Mar. 30, 2021 03:04 PM EDT
Migrants are processed at the intake area of the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. (AP Photo/Dario Lopez-Mills,Pool)

Migrants are processed at the intake area of the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. (AP Photo/Dario Lopez-Mills,Pool)

Mar. 30, 2021 03:05 PM EDT
A migrant child gets a medical check-up before entering the intake area at the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. (AP Photo/Dario Lopez-Mills, Pool)

A migrant child gets a medical check-up before entering the intake area at the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. (AP Photo/Dario Lopez-Mills, Pool)

Mar. 30, 2021 02:08 PM EDT
A migrant and her daughter have their biometric data entered at the intake area of the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. (AP Photo/Dario Lopez-Mills,Pool)

A migrant and her daughter have their biometric data entered at the intake area of the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. (AP Photo/Dario Lopez-Mills,Pool)

Mar. 30, 2021 02:18 PM EDT
Minors are housed at the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley run by U.S. Customs and Border Protection (CBP), in Donna, Texas, Tuesday, March 30, 2021. The minors are housed by the hundreds in eight pods that are about 3,200 square feet in size. Many of the pods had more than 500 children in them. The Biden administration on Tuesday for the first time allowed journalists inside its main detention facility at the border for migrant children, revealing a severely overcrowded tent structure where more than 4,000 kids and families were crammed into pods and the youngest kept in a large play pen with mats on the floor for sleeping.(AP Photo/Dario Lopez-Mills,Pool)

Minors are housed at the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley run by U.S. Customs and Border Protection (CBP), in Donna, Texas, Tuesday, March 30, 2021. The minors are housed by the hundreds in eight pods that are about 3,200 square feet in size. Many of the pods had more than 500 children in them. The Biden administration on Tuesday for the first time allowed journalists inside its main detention facility at the border for migrant children, revealing a severely overcrowded tent structure where more than 4,000 kids and families were crammed into pods and the youngest kept in a large play pen with mats on the floor for sleeping.(AP Photo/Dario Lopez-Mills,Pool)

Mar. 30, 2021 06:07 PM EDT
Young minors talk to an agent outside at a pod in the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley run by the U.S. Customs and Border Protection (CBP), in Donna, Texas, Tuesday, March 30, 2021. The minors are housed by the hundreds in eight pods that are about 3,200 square feet in size. Many of the pods had more than 500 children in them. The Biden administration on Tuesday for the first time allowed journalists inside its main detention facility at the border for migrant children, revealing a severely overcrowded tent structure where more than 4,000 kids and families were crammed into pods and the youngest kept in a large play pen with mats on the floor for sleeping. (AP Photo/Dario Lopez-Mills, Pool)

Young minors talk to an agent outside at a pod in the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley run by the U.S. Customs and Border Protection (CBP), in Donna, Texas, Tuesday, March 30, 2021. The minors are housed by the hundreds in eight pods that are about 3,200 square feet in size. Many of the pods had more than 500 children in them. The Biden administration on Tuesday for the first time allowed journalists inside its main detention facility at the border for migrant children, revealing a severely overcrowded tent structure where more than 4,000 kids and families were crammed into pods and the youngest kept in a large play pen with mats on the floor for sleeping. (AP Photo/Dario Lopez-Mills, Pool)

Mar. 30, 2021 05:57 PM EDT
A migrant is processed at the intake area of the U.S. Customs and Border Protection facility, the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. (AP Photo/Dario Lopez-Mills,Pool)

A migrant is processed at the intake area of the U.S. Customs and Border Protection facility, the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. (AP Photo/Dario Lopez-Mills,Pool)

Mar. 30, 2021 03:06 PM EDT
Young minors lie inside a pod at the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley run by U.S. Customs and Border Protection (CBP), in Donna, Texas, Tuesday, March 30, 2021. The minors are housed by the hundreds in eight pods that are about 3,200 square feet in size. Many of the pods had more than 500 children in them. The Biden administration on Tuesday for the first time allowed journalists inside its main detention facility at the border for migrant children, revealing a severely overcrowded tent structure where more than 4,000 kids and families were crammed into pods and the youngest kept in a large play pen with mats on the floor for sleeping.(AP Photo/Dario Lopez-Mills,Pool)

Young minors lie inside a pod at the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley run by U.S. Customs and Border Protection (CBP), in Donna, Texas, Tuesday, March 30, 2021. The minors are housed by the hundreds in eight pods that are about 3,200 square feet in size. Many of the pods had more than 500 children in them. The Biden administration on Tuesday for the first time allowed journalists inside its main detention facility at the border for migrant children, revealing a severely overcrowded tent structure where more than 4,000 kids and families were crammed into pods and the youngest kept in a large play pen with mats on the floor for sleeping.(AP Photo/Dario Lopez-Mills,Pool)

Mar. 31, 2021 09:41 AM EDT
Young unaccompanied migrants wait for their turn at the secondary processing station inside the U.S. Customs and Border Protection facility, the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. The Biden administration on Tuesday for the first time allowed journalists inside its main detention facility at the border for migrant children, revealing a severely overcrowded tent structure where more than 4,000 kids and families were crammed into pods and the youngest kept in a large play pen with mats on the floor for sleeping.(AP Photo/Dario Lopez-Mills, Pool)

Young unaccompanied migrants wait for their turn at the secondary processing station inside the U.S. Customs and Border Protection facility, the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. The Biden administration on Tuesday for the first time allowed journalists inside its main detention facility at the border for migrant children, revealing a severely overcrowded tent structure where more than 4,000 kids and families were crammed into pods and the youngest kept in a large play pen with mats on the floor for sleeping.(AP Photo/Dario Lopez-Mills, Pool)

Mar. 30, 2021 05:00 PM EDT
Newly migrants wait to enter the intake area at the Donna Processing Center, run by the U.S. Customs and Border Patrol (CBP), the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. (AP Photo/Dario Lopez-Mills, Pool)

Newly migrants wait to enter the intake area at the Donna Processing Center, run by the U.S. Customs and Border Patrol (CBP), the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. (AP Photo/Dario Lopez-Mills, Pool)

Mar. 30, 2021 03:05 PM EDT
Young migrants wait to be tested for COVID-19 at the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. (AP Photo/Dario Lopez-Mills, Pool)

Young migrants wait to be tested for COVID-19 at the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. (AP Photo/Dario Lopez-Mills, Pool)

Mar. 30, 2021 02:08 PM EDT
Migrant families wait to be questioned at the preliminary intake area of the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. (AP Photo/Dario Lopez-Mills, Pool)

Migrant families wait to be questioned at the preliminary intake area of the Donna Department of Homeland Security holding facility, the main detention center for unaccompanied children in the Rio Grande Valley, in Donna, Texas, Tuesday, March 30, 2021. (AP Photo/Dario Lopez-Mills, Pool)

Mar. 30, 2021 02:08 PM EDT