I have to disagree here.
In the age of internet, we discuss things with people from all around the world and indeed, in most places, carnivorous plants natural habitats are being destroyed and the little population left are vulnerable. Indeed, in those high density human population / vulnerable nature ratio, collecting wild plant can be problematic ... even sphagnum moss is protected in some countries ... But what is true elsewhere does not necessarily hold true here in Canada. We are small population / huuuuge wilderness... bogs are far from being rare (at least in the eastern Canada)... and whenever you find a bog, you probably have some cps in it. Actually, even when you don't find a bog, you still might have some cps next to you... for example, I remember fishing in north of Quebec and whenever we pulled the hook, we always had some benthic Utricularia weed stuck on it... I didn't take any but had I kept some, i don't think it would be an issue. Even in road trenches I've seen some utricularia and droseras...
I'm not aware of any law protecting purpurea, rotundifolia, intermedia or anglica here... not only that, you even have books that explain how to make traditional medicine out of carnivorous plants or how to use sarracenia leafs to cook food or... as a source of water when in desperate need (yuk)... lol
that being said you might have protection status for all form of life in national parks etc...
other vulnerable species might be protected depending on location, like filiformis in NS. You'd have to check with local regulation and protection status.
I'm not saying to go collect wild plants, but who in Canada doesn't know someone who knows someone who knows someone who collected some wild plants?