Plus, the question really is 'why not?'. Access to H-1Bs could foster early growth in startups and, in the long-term, increase employment.
Plus a lot of startups have foreign founders and these people need visas. So-called entrepreneur visas an not suited for companies that take investment.
How is that? The more talented, hard-working people, the merrier!
Also, by "us", you are not referring to "those of us on HN", but "those of us on HN who had the good sense to have been born in the US", correct?
The thing most people complain about are how software developers will be reduced to penury if people from other countries are allowed in the US. Were you referring to something else?