You should read beyond the first few sentences.
Edit:
> coming out as gay is still unacceptable, even in educated upper-class circles.
I think it would be difficult and dangerous to try and use the immigration system to select for, say, Obamas over Scalias.
Correlation, meet causation. Lots of countries are more diverse than the USA but are doing far worse when you look at crime/corruption/QoL statistics. Lots of countries are far more progressive and far less diverse.
Essentially, if you're claiming that diversity isn't one of the more defining cultural value of the US, and without it the States would be the same, then I would like to hear your reasoning.
In a way, it's already 6 times higher, because H1-B is not a yearly visa, but (potentially, simplifying here) a six-year visa. 65k is only for "fresh" applications, not the concurrent limit.
In any case, this position only makes sense if you think people are a fungible, replaceable commodity. It does not address the parent's comment at all, which is about culture.
There are only 65,000 H1-B visas per year. Surely the fabric of our country wouldn't dissolve if that number were doubled or even tripled.