Certain strategies for penetrating American defenses may require more labor, skills or materials; certain modes of transport imply greater costs than others, independent of defensive strategies by the United States.
Temporary migrants, being less interested in assimilation and more interested in accumulating assets and transferring these assets to the home country, may supply more labor.
In response to an immigrant influx, capital may also move across industries and areas, since unskilled labor may be more likely to serve as a substitute for capital (Hamermesh 1993).
In case of agricultural shocks, the rural households may require more labor force and hence forcing the migrant to return home in order to allow the household to recover.
In large colonies, age-correlated division of labor may be more specialized, whereas in smaller colonies, the behavioral repertoire of individuals appears to be more flexible, such as in the ant R. metallica (Thomas and Elgar 2003).
From the standpoint of bioscientific obstetrics, obstructed labor is a problem of faulty obstetrical mechanics---the fetus will not fit through the birth canal---but those most intimately affected by a case of obstructed labor may be more worried about social factors than about simple mechanics.
Even if you intend to have natural childbirth, the pain you experience during labor may be more than you anticipate and more than you can tolerate.
Group pens may be more labor- and capital-intensive, but I have a hard time believing that they could possibly be more cruel.
For that reason, people in those societies may prefer more regulated labor markets".
It's that it's designing a solution for a labor market that may be more polarized than ever before.
