1. Open up immigration for anyone with a PhD , MD , etc.. Not just visas - give them citizenships. You want them to stay and make their business here.
(not really on topic, but if the AMA wasn't such a bunch of fuckers we would have a super-fast-track for MD's in other countries to get a US MD)
2. Instant citizenship for any immigrant who goes to a US PhD program and graduates.
(* obviously some difficulty here because colleges would pop up just to take money and make citizens, so there has to be some control on this)
Anybody who's gone to an American science PhD program knows just how completely insane our policy is and how much amazing human talent we are letting slip away. It's fucking retarded that so many Indian and Chinese and Russian (and others) scientists come to America, get PhDs, and leave because they can't stay. Now, as I said it's already too late, and our small-mindedness and intransigence has already fucked us, because they now have decent tech economies to go home to. If we'd done this 10 years ago we could have been the tech leader of the world for a long time.
3. No limit on H1B visas. Fast track to citizenship for H1B workers. Certainly anyone who works in software knows how stupid this is. Don't let American tech companies hire the best workers in the world, and then even when we do get to hire them, don't let them stay and become assimilated US citizens. Good system guys.