I am not familiar with Norwegian immigration law, but I have extensively studied and practiced immigration law and history in the US. I can tell you that there were "open borders" in the first century of the USA, when it was mostly people from Norway and other Northern and Western European countries immigrating to the US; that our first real immigration law was explicitly racist, demanded by one group of immigrants (Irish) to keep out another (Chinese); that every immigration law in the USA since has either been explicitly racist or based on racist motivations.

Why is it that we (all over the world) are so obsessed with regulating the movement of labor - human beings - but not the movement of capital - the wealth those humans create?

I agree instead with my own hero, a Jewish Barber from Poland - Sigismund Danielewicz.

https://medium.com/the-audacity-project/an-anti-racist-hero-is-something-to-be-8e522f05276