Over the coming decades, experts estimate that upwards of a billion people could be displaced by the effects of climate change. A great many of those people will attempt to cross the border between the U.S. and Mexico. It’s easy to imagine how Republicans will respond: ignore or deny the fact that temperatures are rising and batten down the hatches. They’ll further expand a cruel and bloated border security apparatus that traps, tracks, and terrorizes desperate people fleeing impossible situatio