Sweden

(Work in early progress)

Immigration

Sweden's immigration policy is very binary, either you have a reason for getting a work or residency permit, or you don't. This is unlike countries with points system or otherwise weighing several different factors into some kind of combined judgement. The official web page has lots of information on the practical parts, but also the rules involved: https://www.migrationsverket.se/English.html

The information below is a summary of the most likely path for US immigrants.

Work Permit

The main challenge for the most likely path into Sweden is to find an employer that will hire you paying least 80% of the median Swedish salary, that is willing to do paperwork on your behalf, and is willing to wait for a slower hiring process than someone local.