This is pretty spot on. I honestly don't remember the legal immigration numbers off the top of my head, I think it's something like a million, certainly hundred

This is pretty spot on. I honestly don't remember the legal immigration numbers off the top of my head, I think it's something like a million, certainly hundreds of thousands a year, and as you point out, illegal immigration numbers are all over the map (I think the range is something like 10 - 30 million total, not annual but don't quote me). It is important to remember that the US is huge, so it's not the same as Germany taking in 500,000 people by any stretch of the imagination.