I doubt highly that anyone you debate with here on Free Republic considers themselves to be pro-criminal. I doubt very many consider themselves to be pro-illegal alien.
You may consider those to be the natural result of their positions, but that doesn't change the fact that they are coming at the problem from a different angle. They can (and most are) just as sincere and conservative as you.
Yes, I said just as conservative as you. The reason that this is such a hot debate within conservatism is that it involves many different and sometimes competing aspects of conservative thought. It is conservative to want to protect America's culture from rapid change and destability. It is conservative to want to keep the nation secure and to have the law respected. It is also conservative to not believe that a perfect solution can be found. It is also conservative to understand that their are limited resources and be concerned with cost. It is also conservative to be concerned with the impact on civil liberties. And wrapped around all of this are electoral politics concerns- which many different people think are impacted in many different ways by many different approaches. And most of these people are sincere.
You could probably help keep these threads on the right track by not baiting people by calling them pro-criminal. Instead, make arguments that point out how in your eyes the stance they take rewards criminal behavior. It is a subtle difference, but less instigative. And as a benefit to you, it is more likely to convince the person you are debating. I doubt highly that you are winning any converts with insults.
Censorship works though?