Ask HN: Infrastructure and government wise, best Silicon Valley alternative = ?

The general attitude of US border security towards foreigners has put off multiple talented people I know from wanting to live in the US - either they won't move here, or they are looking for an opportunity to leave. a) How would you improve the attitude of America towards foreigners, in particular foreign entrepreneurs? (though everyone) b) Assuming a. is not possible, which other place in the world has the best city infrastructure and government - i.e. if you could airlift 1000 people out of Silicon Valley and into the new place, which new place?