You are making the mistake of thinking US immigration/visa laws have anything to do with sensible policy. In fact in USA any system that is 100% under governmen

You are making the mistake of thinking US immigration/visa laws have anything to do with sensible policy. In fact in USA any system that is 100% under government control tends to be more communist and Quixotic than Soviets. There is more of racist Congress at play rather than anything related to overstays. Now consider overstay numbers (total overstay vs % of total travelers from that country): Canada - 120K (.11%) Mexico - 47K (1.73%) UK - 25K (0.39%) India - 17K (1.32%) Italy - 16K (0.83%) Bulgaria - 300 (1.3%) Cyprus - 61 (0.69%) Poland - 2400 (1.3%) Romania - 1300 (1.4%) Entire Europe - 126K Entire Asia - 56K None of those numbers are significantly different, in fact when people know that they can reenter easily the high chances are they leave more easily. It is a bit like those H1B try to hang to their jobs but those on green card travel all around the world and quit all the time too.