Switzerland has engaged to take action to reduce its CO2 emissions. However, the Federal Parliament has so far not adopted convincing measures. As a result, citizens are losing confidence in the authorities and feel forced to take action of civil disobedience. The purpose of this paper is to examine creatively what legal measures are likely to address this legislative inaction. In this respect, it is important to underline that this is a particularly sensitive issue in Switzerland since acts of Parliament, including laws, cannot be brought before the Federal Court. Switzerland, on the other hand, is a country where the constitutional initiative is known. This raises the question of whether this tool is likely to compel the authorities to act. In this respect, it will be useful to draw inspiration from previous constitutional initiatives launched in the field of migration which have developed tools likely to ensure the rapid implementation of legislative instruments.