Maybe it's a myth that Americans won't take certain jobs. In fact, a study by the Center for Immigration Studies used 2005-07 data to look at 465 occupations. Only four had a majority of immigrants in them: plasterers and stucco masons, agricultural graders and sorters, personal appliance workers, and tailors and dressmakers.
Read it all here. In a horrible economy like our present one, Americans will take the jobs they must to survive. We don't need the illegal aliens, though the Chamber of Commerce types do love cheap labor better than anything, even their country, and the googoo Dems love cheap votes better than anything, even their native working class.