And simultaneously the US mines Europe for tech and science talent. 15.000 Germans work in Silicon Valley. Imagine the boost they would give Germany if they returned or stayed home. It could result in 3000 highly qualified persons for each of the 5 biggest cities in Germany. It's a well known problem for Europe:
> Studies of the best physicists in the world show that the Europeans working in North America are some of the most renowned in their fields. In 2014, an expert panel warned German Chancellor Angela Merkel that the country was losing its best scientists, and a recent report from the Institut Montaigne, a French think tank, argues, “The academics who leave France for the United States are the best, the most prolific and the best integrated on an international scale.”
> Studies of the best physicists in the world show that the Europeans working in North America are some of the most renowned in their fields. In 2014, an expert panel warned German Chancellor Angela Merkel that the country was losing its best scientists, and a recent report from the Institut Montaigne, a French think tank, argues, “The academics who leave France for the United States are the best, the most prolific and the best integrated on an international scale.”
Source: https://www.foreignaffairs.com/articles/europe/2016-01-05/eu...