The president of the European Commission José Manuel Barroso proposed in 2009 to nationalize the approval of genetically modified crops. We use a stochastic partial equilibrium model with irreversibility to analyze the effect of the Common Market Reform for sugar on the maximum incremental social tolerable irreversible costs (MISTICs) of genetically modified herbicide tolerant sugar beet. Voting for approval based on the MISTICs is assessed at the national and the EU level. Results show that the Barroso proposal is more proportional to the economic incentives of technology than the different EU treaties.