Labeling is a popular topic. We recently posted several responses which address this topic.
One passage from the response above from Cathleen Enright, Executive Director of the Council for Biotechnology Information, reads:
“We oppose mandatory labeling of GMO food because we believe such a label would convey to consumers that food made from farmers’ crops grown with our seeds is less safe or nutritious or different from conventional or organic food. A recent study conducted by an MIT professor indicated that this indeed would be the case (See Policy and Inference: The Case of Product Labeling).
We support a consumer’s right to know about the food that they are choosing, but in the absence of any food safety concern, and as believers in GM technology who have seen its benefits accrue to farmers and communities around the world (Check out GMOs and the Future of Agriculture), we believe claims regarding the presence or absence of GMO ingredients are best left to voluntary, market-based labels that traditionally are used by competitors to promote one type of product over another.”
You may also be interested in the following infographic from the Genetic Literacy Project: http://www.geneticliteracyproject.org/wp/wp-content/uploads/2013/10/GLP-right-to-know-infographic.pdf.
If you feel that your question has not been answered in these responses, or if you have additional questions, please ask here: http://gmoanswers.com/ask-your-question.