I mean Canada at least doesn't have a special armed paramilitary force that goes around seeking people to deport. If someone is in the country illegally and acting improperly someone will notice and inform the police but as far as I'm aware there's nobody raiding culturally diverse restaurants seeking to ruin someone's life.

That seems like a law enforcement issue, and boy howdy do we have people for that already!

Like if you're arrested and you are in the country illegally, you could be deported after you've been processed and/or served a sentence. That's already been a thing for a long time. And we could argue in good faith about what the most fair and just policies are surrounding that.

(aside: populations in the developed world are not growing like they used to, and are shrinking in many places. The US is driving away our most respected minds and our most disrespected laborers RIGHT when other nations are going to start treating them even better than before. So even aside from the "be kind to humans" angle it's pretty strategically stupid.)

But what the United States is supposed to be about, as in the Constitution and amendments, is that decent people just get to do their thing to just live life and pursue happiness. You don't get searched or evaluated or judged unless you break the laws we collectively built. Therefore, nobody would going door to door checking people's papers.

The tools that law enforcement would need in order to simply deport all people here illegally are the kinds of things our laws were designed to prevent from ever existing!

I think I would agree with the "liberty" side of that one. It seems much less bad for my family that some folks in town working tough jobs are "ILLeGaL" versus living in a surveillance-state, police-state, fascist dictatorship.