Robyn Harding, who is Canadian, mentioned in a webinar that she was asked by her publisher to set her novels in the US for better marketability. The same case apparently with Shari Lapena, another Canadian. There didn't seem to be any issue with Jane Harper's novels set in Australia and all those novels set in various locales in Europe or Outer Space. Do you know what is going on here? Do I need to relocate my Vancouver Island novel to San Juan WA?
You'll notice that Ms Harding mentioned her PUBLISHER asked her. So, her books found an agent with the original setting.
Each publisher has different blind spots.
And yes, I have seen this before, but not so often that you should pro-actively revise your setting.
Given the number of people who were eyeing Canadia if the election had gone the other way, your appeal may be waxing.
Canadia just suffers from proximity. You don't seem exotic (like Australia or Betelgeuse) cause you're yanno...right there. Practically in Michigan, not to mention a quick hop from Bellingham.
And then there's the problem with your ambassadors: