How do immigrants really affect the u. s. economy?

I literally just did a whole essay on this for my class, When working immigrants come into the United States they provide low cost labor, allowing companies to offer their products at a lower cost for everyone else, and immigrants also pay taxes when buying goods, helping cover medicare and other funds taxes go into, but they do create competition in work areas with natives without a college education, such as agriculture and construction, since higher paying jobs require education and strong communication skills.

china unilaterally claims the entire south china sea as sovereign territory, then builds artificial islands to bolster its claim. it suddenly activates an air defense identification zone over the east china sea, and threatens to down any aircraft that does not report its position. it builds roads into indian territory, then redraws the maps to show that it is actually chinese territory. the people's republic under president xi jinping is quickly becoming the bully of asia.

detente translated to english means politics