India, Oct. 21 -- In their new book nobel laureates Abhijit Banerjee and Esther Duflo debunks myths about migration. Excerpts:

M igration is big news, big enough to drive the politics of much of Europe and the United States. Between President Donald Trump's imaginary but enormously consequential hordes of murderous Mexican migrants and the anti-foreigner rhetoric of the Alternative for Germany, the French Rassemblement National, and the Brexit crew, not to mention the ruling parties in Italy, Hungary, and Slovakia, it may be the single most influential political issue in the world's richest countries. Even politicians from the mainstream European parties are struggling to reconcile the liberal traditions they want to uphold with the thre...