Here is a quick profile of demographic trends in China and the United States, focusing on the population growth for 20 – 65 year olds. You see that China’s working age population boomed, and now is declining. China has minimal in-migration. I guess-estimate that for the U.S., immigration is providing at least 50% of the growth in the 20 – 65 population. When you put this in context of the magnet-like attraction of the United States for the smartest scientists in the world, we don’t look so bad, do we?