Nations across the world are concerned with environmental issues like forest loss. The majority of nations acknowledge the importance of reducing forest loss, and make commitments to do so. However, researchers often find that despite these commitments, and the work of non-governmental organizations, in many nations forest loss is not declining. This research argues that institutional capacity, specifically a nations domestic autonomy may help explain the ineffectiveness of environmental non-governmental organizations (EINGOs) at reducing forest loss. Specifically, I argue that nations with stronger domestic autonomy, measured as the extent to which a nation is free of the direct control of external political actors, improves the effectiveness of EINGOs at reaching their goals of reducing forest loss due to an autonomous state's relative strength and ability to integrate their version of environmentalism or reinterpret existing norms of environmentalism into EINGO ideologies and activities.