I'm not sure Canadian friends would agree about whether they are part of the US :-) the American Airlines earning chart list Canada as an eligible earning destination for some Airlines such as Cathay Pacific or British Airways but not Qatar or Iberia. An earlier poster went back and forth with American on Twitter and the answer was ambiguous at best. I think that's why one of the posters here is asking if anyone has actually flown Qatar from Montreal and received credit on American.