Without land and kin, many sojourners would be dependent on Israelites for work, provisions and protection. They could be day laborers (Deut. 24:14), and the Old Testament mentions that they were conscripted to do the labor in building the temple (1 Chron. 22:2; 2 Chron. 2:17-18). 
Labor Department requirements mandate U.S. employees be treated similarly to migrants, but Obama officials created a new definition of ‘corresponding’ treatment that could be interpreted by courts to include the housing, transportation, and in some instances, meals that H-2A regulations require employers to supply to migrants. Disgruntled employees who are citizens or permanent residents could sue under the ambiguous definition and potentially collect damages.
Approximately one third of all garment workers in the United States are immigrants. If wages needed to be higher to get Americans to take the jobs, many of these jobs would have gone overseas. .. In Arizona, for example, only 30 percent of the 2004 lettuce crop was harvested; the rest was left in the ground to rot. Losses were nearly $1 billion. Farmers certainly could have paid higher wages to get the crop harvested, but losses would presumably have been even greater.