Hidden America: Life in the Colonias

Janie Zapata, 8, at her home in Donna, Texas, outside McAllen in the Rio Grande Valley near the U.S.-Mexico border, April 9, 2012. Roughly 500,000 Texans live in "colonias," or neighborhoods, along the state's 1,248 mile border with Mexico. About 100,000 of them are children. (Scott Dalton/Zuma Press For ABC News)