A re-imagined USA. Futuristic, in that chronologically and technologically advanced from present day.
Different world geography, altered world and American history. USA occupies roughly the same area in North America (save Alaska), but also Meso-America. A nation of First Nation tribes occupies most of present-day Canada. It is the year 2057.
U.S. history is much less about aggrandizement and racially-charged hegemonic global domination; this means that technology has developed more slowly overall, and is not the exclusive domain of the U.S. and allies ... but also that humanitarian and political crises have been less frequent.