Nonprofit environmental organizations often have global policy goals. Consequently, they pursue transnational objectives by pressuring influential governments and international institutions. The effectiveness of this strategy as applied to nation-states varies by domestic political structure. First, transnational actors are more likely to achieve their goals in society-dominated rather than they are in state-dominated countries because the former are more open to external inputs to the policy process and provide a greater number of access points. Second, ironically, transnational actors are more likely to achieve success in relatively centralized states if political access is attained. Decentralization invites a cacophony of voices in what may turn into a maelstrom of domestic politics. Relatively centralized corporatist states may prove accessible without the disadvantage of domestic turbulence.