From the op-ed:
The president pledges to remove more than a third of the Mexicans who work in the United States. He says this will improve “the wage and employment conditions of domestic workers.” That’s obvious, researchers tell Congress, since not even lawmakers can “repeal the law of supply and demand.” If the supply of workers goes down, wages must go up, right? The administration and Congress act together, and within a few years, those Mexicans are gone.
Read the full op-ed here.