The EU and the Proliferation of Integration Principles under the Lisbon Treaty

The entry into force of the Lisbon Treaty has brought about a proliferation of “integration principles”. In addition to the environmental integration principle, which has been part of the EU legal framework for some time, the Lisbon Treaty introduced the principles of gender equality integration, social policy integration, non-discrimination integration, consumer protection integration as well as animal welfare integration. Furthermore, a general principle of integration policy objectives is con