Actually, maineman, what most conservatives want is for the border to be secure before we create this path so that it isn't a perpetual problem, and to open more legal migration and immigration (yes both, some people want to come work then go home afterward, why should there be a barrier to that?). Just "deporting" them would be a bit like turning on a sump pump to "fix" a leaking pipe in the basement. The basement would still be perpetually filled with water, just not "too full"...
We need to fix a bit more than just handing over a "Path to citizenship" to everybody who came illegally too. All that does is drive incentive for more illegal immigration. We need to secure the open borders then open the front door and have them check in as they come rather than try to back fill that gap in the process, once we can do that, that is when the "path to citizenship" for those who came illegally should open.
When our system is so broken that they send a Visa to a 9/11 bomber after 9/11 to the school he was attending to "learn to fly" that means we have a broken system that is so broken that this give it away policy seems insane.
http://archives.cnn.com/2002/US/03/12/inv.flight.school.visas/index.html
Fix the system first, then we'll start working on the effects of our broken system.