As the founder of Best Places in the World to Retire, I’ve spoken with more than a thousand expats, many of whom have told me of instances where they were told that because they lived outside the US, they were no longer entitled to be called “an American,” that they were unpatriotic, or in extreme cases, that they were traitors. Not only do I reject these charges, but I believe that those making them don’t understand what it means to be “an American.” There is no better statement of what it means to be an American than...