The only reason to have immigration is because you need more people to work at building your country: however if those you bring in do not have the same values that exist in that country then the form of government MUST change to accommodate them if they become a large percentage of that country.

This principle was explained by a French philosopher Montesquieu in his 1748 book Spirit of the laws. The only way to prevent this is to only bring in emigrants at a rate that allows them in assimilate into the existing culture. The EU and America are allowing them in at a rate faster then they can be assimilated which is what the political class wants for that allows them to change the form of government which was the reason they are bringing in so many. This has nothing to do with race it is based on the culture of the emigrants e.g. if we replaced all the Anglo Saxon Americans with Hispanics from South America than the government would have to be changed to that of what is in those countries. This must be true because that is what those people are use to.

Whether this is good or bad is not relevant it is only what will happen since that is what those people are use to in they are not assimilated.