Last year, parties to the Convention on Biological Diversity (“CBD”), representing nearly every nation, signed a milestone agreement committing, among other things, to conserve thirty percent of Earth’s lands and oceans to stave off the rapid diminution of the planet’s biodiversity. Implementing these global commitments will require not only strong domestic measures, but also enhanced regional cooperation targeting the conservation of the region’s migratory wildlife and shared resources. Although the United States is the sole major holdout from the CBD, it can still reassert its leadership in regional wildlife conservation by rejuvenating the Convention on Nature Protection and Wildlife Preservation in the Western Hemisphere (“Western Hemisphere Convention”).