Im an absolute centrist with some conservative and libertarian leanings, and I absolutely oppose the use of GMO's, unless absolutely necessary. GMO's should only be used in regions with bad climatic and environmental conditions and wherever there is famine. Another major problem is that food with genetically modified content will not be labled accordingly unless a very strict law is passed. And even then it would make it very difficult to spot GMO content in foods consisting of many different ingredients.
Thats another reason to oppose TTP by the way. I dont want that GMO **** in my food (even though it probably already is in Europe).