Martin Vetterli and Gérard Escher
US President Donald Trump is part of a chilling parade of politicians […] who have risen to prominence in the past decade by fuelling anti-immigrant sentiment. But […] we should be grateful for what global talent has done for our economy. Since 1900, immigrants have made up one-third of US recipi-ents of Nobel prizes in chemistry, physics, medicine and economics. Immigrants account for more than one-quarter of the approximately 110,000 patents filed in the United States each year. There are more than 1 million foreign students in US universities, representing about 5% of enrollees and providing an estimated US$39 billion annual stimulus to the economy. William R. Kerr (2018a)