The discourse and policies Switzerland adopted during the early nineties approximates the behavior of what Liefferink & Wurzel describe as a ‘climate pusher’, a state which innovates with regard to its domestic climate policy and lobby other states to follow its lead. At the end of the nineties, however, Switzerland seemed not capable of translating the propositions made at the international level into national measures anymore. Despite being an early advocate for a world tax on CO2, Switzerland was never able to introduce a CO2 tax on motor fuels on its own territory. Moreover, Switzerland came under criticism for its tendency to buy CO2 certificates instead of introducing national reduction measures, and for the failure to regulate the emissions of the transport sector effectively. In this chapter, we aim to explore these drawbacks in the Swiss climate policy by placing the focus on the political process around the tax on CO2. We rely on social network analysis to demonstrate the difficulty to introduce effective climate policy instruments in the absence of cooperation within actors involved in national politics. Based on these results, we suggest that the structure and type of actor networks engaged in domestic politics might very well explain deviations from climate pushing or pioneering.