Politics can be - should be - more complex than "left" or "right". The article is also not talking about poor Americans. If one is trying to maximize profits,

Politics can be - should be - more complex than "left" or "right". The article is also not talking about poor Americans. If one is trying to maximize profits, yes, hiring the cheapest available labour is a good idea. But there are several other pressures than maximizing profits. "Corporate Social Responsibility" is now part of almost every corporation's "mission statement" or similar documents; of course, profits/shareholder value are still far more important, but in any company there are a few people that actually mean it. Of course, there are also governments. The weaker governments tend to bend over for the corporations that want to come to their country. But we can also consider, say, the government of India. Finally, there are the people, corporations and government that donate some form of resources to help the really poor; convincing these groups that something does or does not work also influences the eventual result.