I'll grant that this article is light on evidence, but it can be true that every country has a worse immigration policy than the US, and that people tend to ret

I'll grant that this article is light on evidence, but it can be true that every country has a worse immigration policy than the US, and that people tend to return to their home countries to start their businesses. Because every country tends to treat its own citizens better than it treats immigrants. I thought that this was the point of the article. Most of the points that you raise have to do comparing immigration policies with one another, rather than comparing immigration policies with domestic policies. Also, I (and I imagine many supporters of open immigration in the US) would certainly argue that every country should be friendlier to immigrants, not just the US. The whole world is terrible on immigration and getting worse. The issue is not who has the least bad immigration policy. It's not getting people to immigrate here as opposed to immigrate to other countries. The issue is making our immigration policy good enough to make it preferable to immigrate here as opposed to not immigrate at all, which is the real danger.