How do the numbers look if you don't correct for the socioeconomic factors, regarding immigrants and crime? If you assume that many immigrants are in the more "crime-ridden groups", you still get more crime with more immigrants? I'm not claiming to state facts, I just wonder if that's the case. Like if you look at the totals in prison, not correcting for said factors, are immigrants overrepresented then? If this is the case, is not the correcting factors skewing the appearance of the results? If all immigrants are poor, and poor people commit more crime, wouldn't more immigrants still mean more crime? Trying to understand what the numbers are, and how they're corrected and adjusted for this and that.
I know that in my part of the world, there is a pretty substantial overrepresantation of immigrants and foreigners in prison. Local heads of police in several neighbouring countries here have kind of broken their "politicly correct silence" lately about an apparently ominous trend in crime and immigration. Situation may be different in the US.
As I stated in Reply #9 above, the over-representation of immigrants in prison is due primarily to the multiple biases in law enforcement and the courts. People of color and poor people are also over-represented in prison. Most immigrants suffer from a double-whammy: being poor they cannot afford the lawyers who keep most rich criminals and many middle-class criminals out of prison, and not speaking English (in the case of many immigrants from Latin America) puts them at the mercy of cops who are skilled at eliciting false confessions and in many cases are prejudiced against them for being foreigners.
There are plenty of innocent people in prison, but more significantly, there are many, many more rich and middle-class criminals who never go to prison because they can afford lawyers who can work the system. This skews the proportions.
Prison population is a failed method of assessing crime statistics because it simply does not represent actual criminality.
A much better measure is the one Steve mentioned on the show: There is less crime in cities with large immigrant populations.