DHS
They want border patrol agents held accountable.
The courts have found that "deterrence" is not a valid policy justification.
Homeland Security Secretary Jeh Johnson said the enforcement efforts aren't changing, despite criticism.
The raids are targeting undocumented mothers and children from Central America.
WHAT'S HAPPENING
Many of them are fleeing the ongoing violence in Central America.
Officials say the immigrant women and children being picked up are within its priorities for enforcement.
The Obama administration is pushing back on claims it doesn't vet refugees.
Officials said there was insufficient evidence to pursue charges.
The government has only interviewed 90 of nearly 4,000 applicants.
Advocates want family detention ended entirely.