Colorado's congressional Democrats are calling for changes in how illegal immigrants are detained in the U.S. Democratic Representatives Jason Crow, Joe Neguse, Ed Perlmutter and Diana DeGette toured the GEO Group-owned ICE detention center in Aurora yesterday. The group said some of the more than 12-hundred detainees claim they have been held at the facility for more than a year. They want the Trump administration to stop using private prison providers to hold migrants caught crossing the U.S.-Mexico border.