It does in sane countries where nutrition labels are required to also include the per-100g stats.
But in North America, they only need to show the per-serving column. Combine that with the <0.5g rule and the fact they are allowed to pick the serving size, you end up with tic tacs which don't mention any sugar on their labels.
If it's 1/2g sugar per Tic Tac and a serving is two Tic Tacs, then we're talking about 4 calories. That's not significant, is it? Just about anything else you eat probably differs from the label by more than 4 cal.
the US has been partially metricated for a long time. All the American imperial unit definitions are actually pegged to metric and have been since the 19th century. The most common unit of soda is the 2-liter bottle. And so on.
It depends on the jurisdiction. Some places require totals per 100g, whereas others are "per serving", which allows you to say 0 to pretty much everything if that "serving" is 0.5g or less.
