The problem is the inequality, as it was all westerners were rich and other countries poor, now our clever capitalist managers found out if they hire immigrants from poor countries for less money they can themselves become even richer and shift the rich-poor gap from West-Rest of world to Managers-Everybody else due to the decrease in normal wages caused by undermining the previous wages with the use of poor immigrant workers and the resulting higher profits which the management usually uses to increase their own income, then whine that all the poor people don't buy enough.