[mirimir]

Liberalization of international investment and trade since WWII have been justified in part to promote peace through economic connection. While the article focuses on human rights and social justice, liberalization of global immigration would arguably have the same impact.

There's another issue that makes open global immigration more attractive to wealthy nations. Free investment and trade move jobs to nations with competent workers who demand less pay, leaving behind industrial decline and unemployment. Open global immigration would ameliorate that.