Uganda, Feb. 9 -- A friend who lives in Germany told me an interesting story about the complexities of immigration. Apparently, towards the end of her term, Chancellor Angela Merkel pushed for laws that made it easy for immigrants to move to and work in Germany.

An estimated one million people were let in within a period of two years, thanks to the long-running conflict in the Middle East. The Germans are handling it better than most, but immigration continues to be a sticking point in the politics of most Western European countries.

It is not easy for neighborhoods to adjust to a sudden influx of foreigners and how that upsets age-old traditions. The makeup of schools, entertainment, cuisines, the economy, jobs, everything. It changes....