Of course it's logical - and it can certainly be quantified.
What "negatives" are you referring to? Sanctuary cities don't create illegal immigrants - they're already there.
Ask a police officer in San Francisco what they think of sanctuary policies. I think you'll be surprised.
I don't believe the claim can be proven and it certainly can't be quantified. I don't believe illegals call the cops now.
"What negatives?"
There are so many, that can't be a serious question?
They have many children that inherently ride the backs of American taxpayers...education, health care, then welfare and the cycle continues...Many will be incarcerated....I could go on and on.
I have friends in law enforcement here in Orange County and they are furious and embarrassed by this sanctuary city bullshit.
No, I think you're the one missing the point.
Illegal immigrants are much less likely to commit violent or property crimes than American citizens - and they're also more likely to witness those crimes.
If a loved one of yours was murdered, and an illegal immigrant witnessed it - would you rather he report what he saw to the police without fear, or stay quiet as to not be deported?
Let's assume you're right. Have we reached the point where we should be so sackless to allow criminals the ability to leverage our laws?