Ensuring diversity of immigration sounds like an important criteria to keep in mind.
1. Is that why they give special virtually uncapped visa classes to Australia, Singapore, Canada and Chile while everyone else has to deal with h1B?
2. Do you think there are country based limits when admitting people through the southern border or granting refugee status?
What is "virtually uncapped"? Do you have a source explaining how Australia, Singapore, Canada and Chile are treated differently? And as an FYI, I see no problem with Canada having a special regime.
BTW Mexico gets the same special regime as Canada under NAFTA.
No clue what parent meant by virtually uncapped.
https://en.m.wikipedia.org/wiki/H-1B1_visa
Counted separately but included in the overall cap.
Another interesting difference is that H1B1 seems to not be dual intent, contrary to H1B. Definitely not the panacea that was hinted at in this thread.