[rpiguy]

I am not offended, no worries. A temporary ban on immigration for the purpose of security is a reasonable proposition to me. Every country has the right to secure itself and define who can and can't enter the country. It is fundamental to the concept of being a nation. India, China, Japan, Korea, even Mexico all have very restrictive immigration policies and I have yet to see anyone work themselves into a rage over it on Hackernews. India even started building a wall between itself and Bangladesh (I have no idea if they completed it honestly, but again I don't remember an outcry at the time).

Historically the US has gone through times of very low immigration and also times of very high immigration. It will swing back in twenty or thirty years.

Specifically in reference to this article, there are very few PhD seats for advanced physics in the US and the universities are so prestigious if someone is denied a visa from a temporarily banned country, another person of equal brilliance from another country will take that seat.