made in canada sticker placement?

Just referring about 1970 dodge dart swingers.
Can anyone give me a correct answer why they where put on.

Canadian built 1970 dodge dart swinger being shipped to the US or other destination ?
All Canadian built 1970 dodge dart swingers got this sticker regardless of where they where being shipped to?


All US cars build 1970 dart swingers shipped to Canada or other distinctions ?
I was under the impression that all 1970 dart swingers where built in Canada not the US.