Can somebody explain to me why Americans need to have green card to work in the US? According the the data, there are 1659 applicants with a success rate of 68%.
Maybe it refers to US nationals as opposed to US citizens. For example, the people of American Samoa and Guam are US nationals but not US citizens, at least not automatically. But I don't know what all the differences between the two categories are.
Also, the Soviet Union was dissolved in 1991, how come there were 4 USSR nationals between 2001 and 2015 applying for permanent residency?
Ah, I should have made it more clear. It's the decision date, note the application date. So probably those applicants applied when the USSR was still a thing.
Yeah, Czechoslovakia is also on the list, even though they split in 1993.
Might be interesting to somehow show the delta between application date and decision date, in particular by country.
So, in essence, the bureaucracy took so long that at some point during the process, their country ceased to exist. Kafka would be proud :)
Could be that they were Americans who denounced their citizenship and later wanted to work in the US. Or it could be malformed data :)