American/Canadian students with Polish heritage are in the English 4/6 program for the same reason other American/Canadian students are -- they didn't get into a US school. They are given preference by the professors because they speak Polish -- and yes the Tawainese are given preference because they have $$$$s a lot of them should have been kicked out for cheating by now and are allowed to take way to many retakes. Since many of the Tawainese never will take the USMLE I'm not sure the ones who are unqualified are every screened out of the system.