I usually hear this type of rhetoric from Latino commies. Do you really mean to say the American people are plundering the rest of the world?
No. But the fact remains that historically the U.S. economy has been strongest when we have been able to take advantage of huge disparities (either externally with other countries or right here in the U.S.) in standards of living between consumers and producers. That's been the case regardless of whether the "cheap labor" involved slaves in the South, Irish immigrants in the 19th century who worked in the coal mines of the Northeast, and Eastern European immigrants in the first half of the 20th century who filled our textile mills.
In fact, the presence of cheap Chinese labor on oil rigs in Colorado is really a case of history gone full circle. This country imported tens of thousands of "cheap labor" (in the form of Chinese immigrants!) in the last few decades of the 19th century to build the railroads across the western U.S.