What, is "eat free" the new mantra of the anti-immigration contingent.
While it may be true that social services are indeed strained in some areas, the seasonal nature of the employment, the desire for work and a life made them cross with only the cloths on their backs.
Those same services still have a majority American citizen customer base and you know it.
Bush's proposal does in fact control this illegal alien problem, by tying the entry to a bonded job offer that has been vetted.
The line for these work visa's will be long, but the line will be in Mexico!
At the same time this is implemented, the ones left on the street with no paperwork will be disappearing as they leave a now hostile environment for a undocumented worker without a visa or a job.
Control of the employer is what this idea really does.