LAS CRUCES, N.M. — Groups advocating for the rights of children and families detained at the southern border are using the Freedom of Information Act to find out exactly where the Trump administration plans to build migrant detention centers on two military bases in the Southwest. The centers are planned for Fort Bliss and Goodfellow Air Force Base to house immigrants until their cases are resolved. Both sites are known to have toxic waste threats. The Southwest Environmental Center has joined Earthjustice in requesting information on the location of those detention camps. Attorney David Baake with Southwest Environmental Center said Fort Bliss has Superfund sites – polluted locations that require long-term cleanup of hazardous material contamination.