First, it's a plan i.e. not a pipe-dream or pretending a huge problem doesn't exist. Now, why do you think it will disadvante U.S. workers or increase welfae rolls?
I guess you don't live in Tx. or Calif. otherwise you would see that many of the former good paying construction/road crew jobs are now largely filled by Hispanics, many of whom are illegal and I know that for a fact because a customer of mine is in that business. Obviously, many builders are still able to get top price for the houses they build while their cost of labor has gone done substantially because they've replaced a lot of their American workers with illegal labor.
This way, they get to EVADE a whole bunch of payroll taxes while paying minimal wages to their workers, knowing full well the taxpayers will be forced to help support the worker's living, medical, education, etc. expenses........pretty neat deal for them isn't it? This is happening all over the country at the moment and gaining momentum as more illegals flood in all the time. The last estimate I've seen is that over $50 BILLION in "services" are being delivered to people who have broken federal law by entering this country illegally. Now, anyone who sees no problem with this can rest assured it will only get worse until the USA resembles some S. American banana republic as for me, I'll continue to fight to preserve our CONSTITUTIONAL REPUBLIC.