OK,i'm back.
About immigration ,i think immigrants should consider the country they live in as their home country and respect its culture(s) n language(s).
They chose that country and shouldn't look at the country they come from anymore because they won't go back to it anymore.
They gotta learn the local customs,language(s) and references. IT's logical.
About multi-culturalism,i think it works(it does in Switzerland).Swiss are united by common references in culture(other than language) that create a national culture,customs,politics and history. QUEBECERS N Flemings knew segregation in the past,it's not the same thing.
About the SOUTHERN US,Mexicans were very few and all that happened b4 the desire of respect and peace born with the 2 World Wars.
I DON't want english to be the universal mother tongue.Cultures have to be respected.I disagree with those sayin that a common culture and language would eliminate wars,unite the world under the american flag and so called american democracy.