In terms of using the traffic light system in the United Kingdom, there really weren't any incentives. One of the situations that arose is some food companies were using their own monochrome system—just one colour—and they're called GDAs, guideline daily amounts, while other companies were using the traffic lights, so it created a situation where they could test to see which is more effective. I think the evidence showed that the traffic light was more effective.
In terms of sodium and whether Canadians like saltier food than Americans, I don't think there's any evidence to demonstrate that. Some of their products are saltier than ours, some of ours are saltier than theirs, and we have roughly the same sodium intake, which is too high. It needs to come down, and we need a comprehensive strategy, or regulations, to bring it down.
I wanted to touch on the point about the food tax reform. One of the things that's not well known among people who aren't low-income is that the Canada Revenue Agency has a system whereby they issue rebates to low-income people. The idea is to compensate for the financial burden of paying GST. If you're a single person and you have a $20,000 annual income, you get something like $600 a year to compensate you for the GST we've been paying. It works out to about $95 for food, but you have to pay it on other things too. The formula for that low-income tax credit could easily be changed to offset the effect of reforms to food taxes. It could even be reformed dramatically to help reduce poverty, reduce food insecurity.
The bottom line, it seems to me, is that there's a chronic problem with the way foods are taxed. Sometimes we're taxing fruit and vegetables while exempting bacon and lard, and it just doesn't make sense to me.