If there weren't ILLEGAL immigrants willing to work under these conditions, and skewing the free market for labor, wages would have to rise and Americans WOULD take the jobs.
Imagines if there were ~550 Americans willing to be a Congressman/Senator for no wages/perks and actually read legislation and consider their constituents before voting. And current politicians had to compete with the people for their own jobs... fair??
I would so love to hear someone put up your premise to some of these congressional windbags at a town hall meeting. Excellent analogy.