[existtoexcel]

A culture reflects the moral boundaries of it people and this in turn defines the laws of those people, written or unwritten, stated for all to abide by without exception. There cannot exist in a culture those that follow the laws of other contrary cultures. Legal immigration implies assimilation and those that want to immigrate agree to become part of that culture. A culture cannot survive a diversity within itself, and it never has. Ever.
The obvious truth of the ages has become obscure behind the smoke conjured from the ever seething cauldron of anarchy stirred by purveyors of upheaval. shrouded by political correctness, diversity is being used to spearhead an insidious assault by claiming a moral high ground through media indoctrination. Diversity has many places, laws are not one of them, neither is culture. The forest, yes, of course. A diversity of cultures, of course. But what of the culture that strives to encompass all others?

[Pearls Before Swine]

I agree with you on most points. I would like to supply a different analogy for immigration and absorption from the physical sciences.

Immigration at a certain level, with assimilation of most of the immigrants, is a good thing—it supplies what in the agricultural world might be called hybrid rigor, and definitely adds to our cuisine. The question is how to think of the level above which assimilation becomes less thorough, or indeed impossible.

In materials, you can melt dissimilar metals and mix them together in a pot. Depending on the first metal, and the metals that are introduced, you may form an alloy. Think of tin and lead mixed together as solder. Before our current lead worries, this mixture was used by plumbers and electrical manufacturers was 60/40, close enough to the 63/37 ratio that produces the lowest melting point.

Other metal combinations can’t mix as well. Put in too much, and instead of an alloy, you’ll get lumps of the additive in a matrix of the main metal.

The same thing happens with liquids. You can only dissolve so much salt in water before additional amounts sit on the bottom.

So it is with immigration. There is a maximum rate of absorption for incoming immigrants without disruption. Further, experience shows the annual number of immigrants that can be imported without major problems varies with where they come from. Liberals are willfully blind to this, alas.