This FrontBurnervian has another theory:
My dad was a cop for 30 years before he retired. He will be the first to tell you that the majority of Hispanic-on-Hispanic crime goes unreported, especially for those whose immigration status is in question. If one could deduce the unreported crimes and add them to what El Paso and San Antonio are reporting, the status for both cities would plummet.
Okay, I’ll buy that. Anybody got something better?