We can and should debate what needs to be done for our broken immigration system. But we must do so armed with facts. Immigrants commit fewer crimes and are incarcerated at a far lower rate than U.S. citizens, according to multiple reports . Unfortunately, there is no reputable data comparing the crime rate of undocumented immigrants against those who enter the country legally. But what we do know is this: The rate of violent crime in the U.S. has declined by 50% between 1993 and 2015 , according to FBI data. During almost the same time period (1990 to 2013), the number of immigrants in the U.S. increased from 7.9 % to 13.1%, and the number of undocumented people tripled, from 3.5 million to more than 11 million, per a report from the American Immigration Council