I am a fan of Superman movie.
Words out there which reviewed that the upcoming movie is going to be something realistic and down to earth ? In fact, I feel that it shouldn't be that way.
Superman movie should extend beyond our imagination; going beyond the galaxy and etc, for a simple reason - being Superman is really too boring without big enemies and threats - there is no point worrying about Earthly issues.
Movie makers must be able to give audience something which is heavenly, something celestial and galactic-nature given that Superman is hailed from another distant planet; an alien.
Therefore, it definitely makes no sense of trying to blend Superman into the real world of USA, lest making similar mistake of The Dark Knight Rises where it was told that Batman exists in a the city of Gotham which is part of USA and he only fights crime in Gotham - come' on guys - why don't US government engage Batman to fight in wars ?
And yes, a real Superman has no place on Earth, lest one has to pretend as Clark Kent.