Your take's premises have flaws.
First off, maybe Americans do move to Sweden, and maybe sometimes they overstay their visas. On the other hand, for decades, various aspects of Sweden encourage this, such as the economic environment - turns out Swedes don't like picking apples, and if some Americans (a small percentage) don't overstay their visas, the apples don't get picked, and Sweden's apple industry collapses within a single season. So the society implicitly approves of having as many Americans as they can get, even if the government goes back and forth on the issue. As a result of this you have Americans with two generations of descendants that have lived in Sweden for decades and are undocumented or perhaps documented under some program that the new government of Sweden just decides it doesn't like. Or maybe they're citizens and the new government just wants to start denaturalizing.
> or even targeted personally because I sound American
I challenge you to really think deeply about this position. Think about what it means for a State to decide that all people from a whole bunch of different countries kinda look the same because of the color of their skin, or kinda have similar accents, and then just start arresting people based off of that. What does that mean for other people who happen to have accents? Who happen to have that one color of skin? Just typing it out makes me feel disgusted, it's flagrantly racist. Why don't you feel that way?
Finally, I really deeply wish to impress upon you the critical importance of due process. It genuinely is All or None. There is no "due process for people who immigrated legally and no due process for people who immigrated illegally," because due process is the method that determines that. If due process is gone, there is no "oopsies we deported you by accident," and there is no "hang on a second, I'm an American, I don't even have a passport, just look at my driver's license!" Do you understand that when due process is suspended, nobody is safe from being black bagged? How could you justify that? How do you not immediately think of the SS?
And all this for what? People being black bagged at the streets, people stuck in traffic tear gassed by high strung ICE agents, businesses being raided, all this violence because why? What actual problems were there from undocumented immigrants? Because deporting them is hurting the economy rather than helping it, so it wasn't the economy. Nobody's taking up the low paid fruit picking jobs that undocumented immigrants worked, so it wasn't for the jobs. Crime isn't going down, so it wasn't public safety. It's so transparently been a distraction from the failure of the ruling class to improve affordability that even my most stalwart of Trump supporting relatives are turning against it and looking to left economic populists like Mamdani.