There are many Americans, both natural citizens as well as naturalized, who have moved to other countries. Some of them came from these countries originally and had only been in the USA for a defined purpose, either school, get a career jump, make fortunes etc. while others have become disaffected and alienated with life in the USA and have relocated to other places. You will find Americans living in just about any country on the globe, especially in Latin America, Europe and Asia, even in the Middle East. In most of these countries, there are organizations from both political parties that afford the opportunity to be involved in the issues back home.
For many, the concern for what goes on in the USA is not that strong, while others do share a deep concern as to the direction our country is heading towards. Many of the expats, as they are referred to, have a deep pride in their background and also know that there is a place for them back home, if the day comes when they can no longer feel welcome in their new country or simply miss the American way of life.
Even those who are feeling out of touch with American life should do some research on this issue and exercise their right vote.