Flow of child immigrants slows along Texas border

This Aug. 4, 2014 photo shows Eneyda Alvarez of Honduras peeling a mango while her son Antony plays at the Senda de Vida migrant shelter in Reynosa, Mexico. Alvarez hopes to join the thousands of families _ mothers or fathers with young children _ who have crossed the Rio Grande into the U.S. United States. (AP Photo/Christopher Sherman)

McALLEN, Texas (AP) - The number of unaccompanied immigrant children crossing the Texas-Mexico border has slowed considerably in recent weeks, allowing the federal government to close the temporary shelters that it hurriedly opened to handle the surge.

The Border Patrol says arrests in South Texas have fallen to about 100 per day, down from 300 or more in June. The decline could be the result of summer temperatures or a messaging campaign in both the U.S. and the migrants' home countries. No one knows for sure.

Authorities are careful not to say that the crisis has passed. When temperatures subside, children could be back in greater numbers.

The White House has shied away from taking credit for the decrease, which gives the administration more time to deal with immigrants who have already arrived.