Germany has one, and it centers on immigrants assimilating into German culture rather than holding themselves apart while taking advantage of the German benefits that drew the immigrants in the first place.  It’s articulated by Joachim Gauck, President of Germany from 2012-2017.  He told Bild

“I find it unacceptable that people who have been living in Germany for decades cannot hold a conversation in German, do not attend parent-teacher conferences or keep their children from going to classes or sports.”

He said people should not shy away from standing up for German values out of fear of being seen as a racist or xenophobe and that there should be “something like binding rules for living together and not several societies alongside one another.”

Absolutely.  A nation’s culture, its ability to rule itself, its very existence are at risk when immigrants as large groups don’t assimilate, and the receiving nation allows that to occur.  The nation ceases to be; it devolves into a collection of disparate groupings who happen to occupy a geographic area.