Anyone who has a basic understanding of economics knows about the Law of Supply and Demand, which essentially states
The law of supply and demand is a theory that explains the interaction between the sellers of a resource and the buyers for that resource. The theory defines how the relationship between the availability of a particular product and the desire (or demand) for that product has on its price. Generally, low supply and high demand increase price and vice versa.
Applying the Law of Supply and Demand to the labor market, the law of supply and demand means that the fewer workers (the sellers of their labor services) available, the higher wage employers (the buyersof workers’ services) must pay.
Conversely, when there are more workers than jobs, the price of labor falls.
This is how too many immigrants in the labor market (legally and illegally) can harm American workers.
According to U.S. Census Bureau data (in full below), it appears that black Americans are the most harmed by immigration.