Write an argumentative response asserting what you see as the most significant barrier that immigrants face in attaining a successful, comfortable, and/or peaceful existence in the US. Race? Class? Ethnicity? Gender? Age? Stubbornness? Bad luck? What solutions, if any, does the author of the text present in aiding immigrant characters from whom successful, comfortable, and/or peaceful existences in the US are withheld?

Socioeconomic gaps, along with their political elements, are rooted in class warfare, or class struggle. Social constructs (concepts that were invented by humans during our development as a civilization) such as race, religion, and gender roles have been used as a weapons of societal divisions by the powerful elite, but the struggle of humans in attaining higher levels in the socioeconomic ladder is rooted in class warfare.
This can be seen in the caste system of ancient and, to a lesser extent, contemporary India. Examples of controlling the distribution of wealth, land, and power can also be seen in Europe with the feudal system, or serfdom. This hierarchical structure can be seen in modern-day America, in which lower-class and lower-middle class immigrants and non-immigrants alike play respective roles in the social and economic systems.
In the novel, the author explores the extreme and realistic forms of these social and economic dynamics. The author does not provide concrete solutions, such as those you would find in a suggestion section of a peer-reviewed thesis, but paints the complexities of physical and political borders and the concept of unrestricted human migration.