I've met my fair share of "east Asians" not born in the U.S. and haven't encountered one who couldn't speak English. Care to guess how many native-born Americans or Canadians I've met who can speak Korean or Japanese or Mandarin?
The fact that these are university students the OP is yammering about should have been the first clue that they are reasonably well integrated, regardless of where they were born. Perhaps OP needs to broaden his horizons.
The fact that these are university students the OP is yammering about should have been the first clue that they are reasonably well integrated, regardless of where they were born. Perhaps OP needs to broaden his horizons.