The US didn't make nuclear weapons in the 1940s by going for Third World foreigners: we snarfed up the Nobel Prize winners, back when that meant something.
We didn't send a man to the moon in the 1960s by importing a bunch of barely-English-speaking pagans who were in it only for a green card, but by relying on Patriotic Feeling. One of the few things JFK did right, besides Taxes.
Also I trust we can agree on the following: any current GOP candidate over Hillary.
Look. Trump made Cruz more conservative on the H1B issue.
After Disney, Cruz has called for a freeze on H1B workers. Cruz was also wrong on TPP and the corker bill.
I like Cruz because he is actually the only elected person to try and use the power of the purse to stop ObamaCare.
And his flat tax would get rid of the IRS and its incessant persecution. Also with Trump may over step the constitution and be a bit authoritarian.
But Trump is way better than the donks.
Though I agree with much of what you said...
Our Nuclear program was a non starter without Einstien.
Our Space program would have taken a whole lot longer without Werner von Baun.
But - they became citizens. They were scientists and not waitresses.