In 2018, the dispute over the rule of law in Poland produced a significant breakthrough in the process of European integration. The Court of Justice of the European Union (CJEU) declared itself competent to deal with complaints about “systemic” violation of the rule of law in EU member states. Moreover, the European Commission decided to use the infringement procedure to halt the destruction of the independent judiciary in Poland. Although EU institutions acted in line with EU treaties, these decisions had a truly revolutionary character. In the past, the Commission and the CJEU were unwilling to make use of treaty provisions that would have allowed them to intervene when the independence of the judiciary in an EU member state was at risk.