… is from page 123 of Jagdish Bhagwati’s 2004 book In Defense of Globalization :
As it happens, this parallel between the effects of free immigration and of free trade in goods found an echo in political debates over immigration policy in the last century. It is interesting to recall the fierce debate that broke out in England over the proposed immigration legislation in 1905 that would have created quota restrictions on immigrants in response to the “alien invasion” by Central European Jews of London at the end of the nineteenth century. In that political fracas, the free-traders were all free-immigrationists, while the immigration restrictionists were also trade protectionists.
Indeed. True liberals are principled cosmopolitans who reject nativism and tribalism and racism and any other variety of us-vs.-them-ism or we’re-superior-to-them-ism or we’re-more-deserving-than-them-ism.