1 Introduction.- 2 Methodology - Sovereignty, Hohfeld and Coercion.- 3 Historical Development of the WTO DSS and National Environmental and Public Health Regulation.- 4 The Judicial Function of the WTO.- 5 Trade Restrictive Environmental Measures and the GATT.- 6 Environmental Cases under the GATT.- 7 Trade Restrictive Environmental Measures and the TBT.- 8 Environmental Cases under the TBT.- 9 NPR PPMs and the SPS.- 10 Relevant Case Law under the SPS.- 11 Conclusion.