I'm very interested in the parallels between the criminalization of black people and the criminalization of migrants, and the parallels between the drug war in general and the criminalization of migrants, as I've written about at No Borders or Prison Walls. I recommend checking out this speech by the author of "The New Jim Crow". She doesn't talk about immigration, but you can see how what she talks about relates to it.
I'm also interested in looking at the roles the private prison corporations might have played in any legislation relating to the drug war, as they have with the criminalization of migrants with SB1070 both through ALEC/Russell Pearce and through Governer Jan Brewer. I intend to look further into that. I'm also interested, though, in why it the privatization of prisons isn't the problem per se. There have been economic and political reasons for people to be imprisoned before prisons were privatized. I discuss that a bit in What came first: the Racism or the Profit Motive? You can expect more on this in the future.