From ThinkProgress.com:

Oscar Herrera has spent the past 11 months hoping that the government would release his wife and daughter from the Karnes County Residential Center, a family immigration detention center, located in Karnes City, Texas. Fleeing violence in El Salvador, Herrera’s wife Karen Morales Sanchez, 25, and their eight-year-old daughter Yoana made the 1,600-plus mile trek to the southern U.S. border, pleading for asylum to stay in the country. But once Herrera’s wife and daughter surrendered to Border Patrol agents, they were put in the Karnes detention facility, without given the ability to pay a bond to secure their conditional release.

Apparently President Obama heard Hillary Clinton's "clear message" that “just because your child gets across the border, that doesn't mean the child gets to stay.”