@Germlat,
What the heck do you want Germlat?
I am being pretty specific....
In France.
1. Give freedom of religious expression (e.g. headscarves).
2. Switch to a system of birthright citizenship so that every immigrant group is part of society and is vested in it.
In the US.
1. Pass immigration reform that ensures that people who are living, working and raising families here can participate fully in society.
2. Make sure that the we continue, as a society, to speak up against the minority in this country who want to make the US less inclusive.
3. Make immigration easier and support the inclusion of new groups into the general society.
I am giving you a lot here. You are asking a very broad general question... you are going to have to do better.