We continue to confuse population change with net domestic migration. Over the last 20 years, the U.S. has become increasingly rural even as many of its cities have grown.
The number of immigrants in a country doesn't seem to have an effect on how diverse its national team is. If anything, it appears that ethnic and racial minorities get pushed toward soccer.
What will happen when young talent starts refusing to subsidize the creative industries that aren't really profitable in America's most expensive cities?