How ambitious are you? If you want to work very hard and potentially change the world, come to the US. For better or worse (probably worse), the US is basically the place where world-changing technology development happens.
If you are more interested in work/life balance, I would recommend Europe (esp. Germany), Canada, Australia or maybe NZ. In particular everyone I've talked to who knows both Australia and the US agrees that while Americans make more money, Aussies have a better lifestyle.
There are many, many things about the US that are just astonishingly broken. The immigration system is one of them. Also, there is lots of anti-immigrant turmoil going on in the US now.
Also, there is lots of anti-immigrant turmoil going on in the US now.
Not just in the US. It's also happening in Europe and Australia.
This thread is for asking the rationalist community for practical advice. It's inspired by the stupid questions series, but with an explicit focus on instrumental rationality.
Questions ranging from easy ("this is probably trivial for half the people on this site") to hard ("maybe someone here has a good answer, but probably not") are welcome. However, please stick to problems that you actually face or anticipate facing soon, not hypotheticals.
As with the stupid questions thread, don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better, and please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.
(See also the Boring Advice Repository)