Reminder that migration is not driven by absolute wage disparities between nations; rather, it is a consequence of global capitalism's tendency to produce and maintain unequal productivity structures across countries. These structural differentials more than wage gaps themselves underlie capital's demand for mobile labor. Immigration functions as one among several strategic instruments, including outsourcing, technological innovation and labor market flexibilization, that capital employs to regulate labor supply in response to rising unit labor costs.
Global wage convergence doesn't occur because labor remains largely immobile, institutionally segmented and subject to political controls, whereas capital is highly mobile and operates according to the imperatives of competitive profit maximization. Therefore, framing immigration as a binary choice between accepting migrants or reducing domestic wages misrepresents the dynamics of the system.
Capitalism neither pursues nor facilitates global wage equalization rather it utilizes labor migration as a means to restore and maintain profitability under conditions of real competition, but so many radlibs are never gonna get it because they're stuck on that broken Unequal Exchange logic. They unironically reduce competition between bourgeois nation-states to "poor countries are getting robbed".