" Far from being just part of the problem, the people of the South are leading the global fight against ecological destruction. They are our allies, not our enemies, and if we are serious about working with them, then no part of our work should involve efforts to turn immigrants from their countries away at our borders.

Support for immigration controls strengthens the most regressive forces in our societies and weakens our ability to deal with the real causes of environmental problems. It gives conservative governments and politicians an easy way out, allowing them to pose as friends of the environment by restricting immigration, while continuing with business as usual. It hands a weapon to reactionaries, allowing them to portray environmentalists as hostile to the legitimate aspirations of the poorest and most oppressed people in the world. "

― , Too Many People?: Population, Immigration, and the Environmental Crisis