. >> carl takei is an attorney with the national prison project of the aclu. $3 billion private prison industry's biggest income of the year. >> from 2008 to 2014 it's estimated that the private prison industry spent more than $13 million on lobbying congress. and much of that was focused on the committee that can allocate money for detention facilities. >> reporter: cca says it doesn't lobby for or take positions on detention laws. but takei says the math is simple. the more detainees are rounded up the more detain ebeds are needed and the more business for private prison companies. juan miguel cornejo, seen dancing with his daughter at her 15th birthday party, probably won't be reunited with his family soon. some have been kept inside eloy for years. >> reporter: what will you do next? >> translator: right now i'm going to continue fighting for my case, i trust in god. i trust in god. i trust there's justice in him. >> what do you tell your children? >> to forgive me for not being with them right now. it's out of my hands. >> reporter: as a mexican citizen odds are less than 5% corne