small businesses perhaps. but larger, established businesses, don't hire people off the books. and will actually take time to authenticate documentation. its unlikely that I walk into home depot now and see undocumented persons in orange vests. but with a guest worker program, I will. maybe its different in border states, but at least in NY, this is what I see.
the current businesses that employ illegals right now - I see no evidence that they want to operate differently. they employ illegals now, off the books - they will tomorrow. they don't want a guest worker program, they want the system we have right now - which they helped create.
there is only one way for this guest worker program to be a benefit - it must REPLACE the employer/worker arrangement we have now. to do that, employers must face harsh sanctions. and there must be some stronger curtailment of people just walking into the US to get jobs, accessing the health care system, etc. the only way a guest worker program can be a benefit, is if foreign workers see advantages in signing up, fear continuing to be illegals, and employers are forced to hire from that pool or face sanctions. I don't see that in the plan right now - all I see, is a brand new guest worker program that's just going to be added on top of what we already have.