Without commenting on the worthiness of the goal, you can't get acceptance for a new idea without exposure and US exposure to foreign countries and cultures are generally either presented in TV/movies as something mystical or the enemy, but always something alien. So, your first step is to provide enough exposure that most Americans can find a foreign people, with different customs, language, etc., seems completely normal and can be identified with.
As a side note, this will probably have to be done though entertainment media, as massive amounts of physical exposure has not seemed to bring Mexicans up to this level of identification with many, of not most, Americans.
eta: You know what you need? You need a Will & Grace for Scandinavians, that takes the "alien other" and shows them as human and likable.