There's no single ingredient that is uniquely responsible for obesity. By that standard, trans fat isn't the cause, nor is saturated fat. The one distinct thing about trans fat is that it doesn't have any redeeming nutritional benefits whatsoever. It contributes just as many calories as saturated fat or polyunsaturated fat, but all it brings is harm to one's health. So I think it fits fairly squarely within the mandate of this committee.
On the question the chair asked earlier about someone following the Heart and Stroke Foundation diet or any of the commercially available ones, those are determinations about the relative healthfulness of a particular food, often in relation to others in the same food category. If you look at some of the commercially available logo systems, virtually all the foods are from the former “other” category, the condiments.
In the case of the Health Check system, I think 50% or 60% are from the meat and dairy categories, whereas the Canada Food Guide wants us to consume three-quarters of our food from fruits and vegetables and whole grains. So strictly speaking, if you followed the Health Check program you wouldn't be getting enough whole grains--the big picture.
But the most important thing is that people follow the general dietary goals of more fruits, vegetables, and whole grains, and less dairy products and meat, but lower-fat versions when they do consume them.