Peace -

Obviously if Canada is found to be harboring birds with a dangerous form of bird flu, that will constitute a "germ warfare" (WMD) threat to the US, and an invasion will likely be forthcoming.

It will have nothing, of course, to do with Canada being the largest single source of oil imports to the US, or being also the largest single source of refined nuclear fuel for the whole world (full of dangerous enemies of the US).

If Canada would just clean up their immigration policies and stop those birds so that they can't infiltrate the lower regions of the continent, a major invasion may be forestalled; although we may still have to send all our stray cats up there as a "peace keeping" force.

John