Trump was referring to the 1.6% of illegal immigrants convicted as criminals, Not all 12 Million undocumented immigrants. And, these immigrants express FEAR (created by Media) that Donald Trump is going to have Law Enforcement going to Knock Down 12 Million doors and arrest them and imprison them and deport them. So, I can logically conclude that the people living in a steady state of fear have little education and low IQs? Here is a picture of justified fear below.
The authors also looked at incarceration rates for males between 18 and 39, since most crimes committed by men in that age range. Data from the 2010 Census, the report found that 1.6% of foreign-born males are in jail, compared with 3.3% of the native-born population. Researchers have long questioned the accuracy of Census data for prisoners, since the information they get from inmates is often incomplete, and immigrants could lie out of fear of being deported. But the authors found similar trends going back to 1980, so that helps bolster their case."