Lots of people talk the talk about Grace and Charity by looking at the macro equation rather than what's close at hand. That fits into the, "in the long run, we're all dead" school of thought and is directly contrary to what Christ taught regarding our duty to work for the night is coming rather than rolling over for what gets us through the next temporal night in the most comfortable or profitable shape.
If the things believers choose more directly reflect the Lord, then this will in turn prove a better demonstration (or witness) to doubters and unbelievers.
“Keep the H1Bs out” just strikes me as a double edged sword that could harm as well as help. I am currently working in a contracting situation where, for reasons unknown to me but that I did not refuse, I was chosen to serve alongside of a large group of people from India. And I’m actually doing it pretty well, though surely part of the reason is that I can relate to the client who is still pretty much conservative white bread American. Competencies and loyalties range from great to very little among the H1Bs.
I’ve also found that among the people from India are a lot of sincere Christians. Having to exercise that faith in the third world gives them a perspective that many American Christians lack today.