Over the next few decades, anthropogenic climate change will force hundreds of millions from their homes in a migrant crisis of unprecedented proportions. As global temperatures rise, a series of “slow onset” environmental catastrophes has been set in motion; in many regions of the world, fresh water is becoming scarce, agricultural productivity is declining, and rising sea levels are producing higher storm surges. [1] Modeling the effects of these and other factors—such as heat stress, more extreme weather events, and the loss of habitable land—on “livability,” the World Bank predicts “climate change ... could force 216 million people ... to move by 2050.” [2] While some of these displaced individuals may migrate to safer regions within their home countries, many will choose to move to countries less economically affected by climate change. Ensuring that these future migrants receive government support is necessary to guarantee that they can secure a livelihood and find community in their new homes.