[rmind]

Can you give some specific examples? I would say that, unless you have some additional qualifications (European ancestors, EU spouse and similar), the majority of EU countries actually don't make it that easy. Of course, it depends on your definition of "relatively easy".

[agentcoops]

Yes, it's never a trivial process, so a lot of work is certainly being performed by that "relatively": I have extensive personal experience with the UK immigration process and know of the US equivalent through the experiences of former colleagues back home. France, for example, is five years to a passport/naturalization. Germany is three years of skilled work to indefinite leave to remain. The Netherlands is five years to indefinite leave to remain. None of those examples require European ancestors, EU spouse etc, but generally it's easier if you have a university degree and work in the various fields most readers of hacker news do.

[rmind]

Well, naturalisation in most EU countries would involve some other requirements: language knowledge (you'd have to pass an exam) + civic/constitutional exam or integration test + naturally, no criminal record, etc + some countries are quite restrictive on dual-citizenship (i.e. they don't allow it for foreigners, meaning that you would need to renounce your original citizenship).

Visas and residence permits are, of course, easier.