Not too surprisingly the views on regulations for nanotechnology are drawn pretty clearly along political lines of NGOs versus industry.
The opposing forces are clearly delineated here. You have the NGOs essentially in favor of a moratorium on nanotechnology and industry seeking more clarity on the entire issue of regulations on nanotech.
There really hasn''t been much movement along these lines over the last several years. Maybe research that answers some of the outstanding questions should be emphasized here to break the stalemate.