For food: GMO should be labeled, country of origin should be labeled. Congress should require it, not had it to agencies. There are too many agencies and agents creating rules with the effect of law.
Organic foods, for example, arguably should be labelled as hazardous because they are approximately 100 times more likely to send you to the hospital than conventionally grown foods, mainly because of higher incidence of fecal material, e coli, insect parts, etc., but the incidence of risk is still de minimus, so unless you have an animus against organics, live and let live is a reasonable policy.
Conventional foods are orders of magnitude safer, so there is no reason to label them.