Or if the foreign tax credit or foreign earned income exclusion aspects of US tax law serve the same purpose as the treaty would. And the treaties often have ga

Or if the foreign tax credit or foreign earned income exclusion aspects of US tax law serve the same purpose as the treaty would. And the treaties often have gaps or gotchas, though they help a lot. (I'm an American in Canada, so I've had to become familiar with all of the above as applied to my case.)