is this correct?

Thesis Statement: Although some people believe the U.S should place tighter restrictions, the U.S should not place tighter restrictions on immigration for these two important reasons. Body Paragraph #1 (Topic Sentence) First of all, The U.S should relax it's immigration restrictions because the prosperity of America represented in the hard work of the immigrants who give a hand in developing the health care system, engineering, and manufacturers in this three ways. Body Paragraph #2 (Topic Sentence) Second, The U.S should not place tighter restrictions on immigration because immigrants contribute to adding wonderful and diverse things to the U.S in these three areas. 6