In a story posted on Farm Wars, it appears that a case will be take all the way to the Supreme Court, to determine the safety of Genetically Engineered (GE) crops. The GE crops’ parent, Monsanto, has been under fire from the Center for Food Safety (CFS).
You can see the story posted here: http://farmwars.info/?p=2258
There has been much debate about the safety of GE crops, especially the impacts on natural ecological and biological cycles. There is research abound on the topic, a quick search on Google Scholar will bring up some of the debate. A good place to start for some data and research on the safety of genetically engineered foods can be found in Food Toxicology (Engeseth, 2001)
Engeseth, N.J. (2001). Safety of Genetically Engineered Foods. In W. Helferich & C.K. Winter (Eds.), Food Toxicology (pp. 77-89). Boca Raton, Florida: CRC Press LLC.