I was too caught up in the "socio-economic factors" question, and I overlooked the important part: SALMON.
Norwegians are huge in the salmon trade. They made a big effort to convince japs that salmon was good for sushi, because traditionally they would never eat raw salmon because pacific salmon had a ton of parasites. Sooooo maybe they have a point with the Argentine salmon trade, but they probably also have a financial interest in it as well.