Mitt Romney is touring the UK, Israel, and Poland this week -- but not Canada. Why not? Wait, wait, hear me out: This is not the usual "they forgot Canada again!" lament. The political purpose of Romney's foreign tour was to accuse President Barack Obama of straining relationships with key allies. Right now, the bilateral U.S.-Canada relationship is working very well for both countries. A photo-op of a smiling Mitt Romney wearing a hardhat beside a pipeline in Fort McMurray, Alta., would not help.