Read the DSA website. Some of what the DSA are proposing is not at all like Sweden and Denmark.

I may sometime. That they have positions I don't agree with is no surprise. Every party does.

Government ownership of critical companies?

Not sure what you're talking about. I do favor government ownership of some things. For example, resource extraction. Why is it that we "lease" land to companies for a pittance, and let them reap all the rewards from our resources? Oil, copper, coal, or whatever. They are in the ground, usually on public lands. Government should be extracting it, and rewarding us little people (even if it's just deficit reduction). Alaska sort of does this (they get bonus checks every year).

They probably shouldn't be owning car companies, if that's what you meant. However, to my rant about the Saudi pipeline, if private industry is insisting on moving operations overseas for some critical items (e.g. electronics, healthcare materials, etc), the argument can be made that government should be running some operations here to prevent the interdiction I spoke of in that thread.

Unfettered migration?

Agree with you there (assuming you mean immigration...internal migration should be fine). It should be fettered. But not gestapo-like. None of that "your papers please" BS, or detaining citizens or valid visa holders (or those otherwise doing what they should through the system).

Sort of tangential, but I'd be OK with a "North America Zone". We already share the longest unguarded border in the world with Canada. Free movement back and forth would be fine with me if we can hammer out some of the details to the satisfaction of both nations.