Immigration in US - Source of crime?

Been doing some digging around for incarceration statistics to see if Immigrants are as big a source of crime as Trump specifies.


Not sure whether it is as big an issue as he claims.


I started my analysis with the Bureau of Justice Statistics, which publishes an annual report of jail stats. Includes a table of non-citizen prisoners.


In 2015 - the stats were as follows...


Non-Citizen prisoners by Federal and State Jurisdictions = 65,107
Total Number of Prisoners in Federal and State Jurisdictions = 1,526,792


So pretty small percentage, right? Well not so fast.


That number does not include Californian numbers, which don't publish non citizen prisoner stats.


Going back to 2011, when California did publish these stats, we worked out that California had around 10.9% of its prisoner population to be non-citizen.


Extrapolating that to 2015 (10.9% of 2015 California prisoner population of  129,593), means we have an estimated California non-citizen jail population of 14,128.


So total Non-citizen prisoner population = 79,235


That means citizen prisoner population = 1,447,557


If we convert them to by 10,000 pop stats based on populations of non-citizen (22,984,000) and citizen (295,884,100), as of 2015, we get the following rates of imprisonment


Non-Citizen  = 34.48 per 10,000 people
Citizen = 48.93 per 10,000 people


So Citizens, which to be fair does include the large African American prisoner population, are more likely to be imprisoned than immigrants.


But its like when a guest breaks something in your house, vs a family member. You are more likely to forgive the family member.