You think Joe Sixpack has a soft heart for people who came to steal his country and his livelihood ?
Joe Sixpack isn't as cynical as you. I have much more respect for Joe Sixpack than you do.
sinkspur is correct on that point - most americans would NOT support forced roundups, deportations, "concentration camp" style detention centers. no way. go after the employers and the landlords, many of these people will deport themselves.
right now most americans are against amnesty. over-reach on this thing, accrue public sympathy for the illegals, and you'll see a majority of americans supporting amnesty. and once that happens, its over, the 12 million here will be just the start. at that point, you might as well just cede the US southwest into a homeland state.