Thanks Jason,
Should it be OR us/ca? The condition couldn't be that a buyer would be from both countries, right?
Triggers:
Session Variable exists "eCartCheckoutForm_shipping_country"
AND
Based on session variable Value:
If the Session variable "eCartCheckoutForm_shipping_country" is "!=" a value of "US"
OR
Based on session variable Value:
If the Session variable "eCartCheckoutForm_shipping_country" is "!=" a value of "CA"