In his 1919 book, The Economic Consequences of the Peace, John Maynard Keynes described the open borders of the then bygone first age of globalisation before WWI:
“The inhabitant of London could order by telephone, sipping his morning tea in bed, the various products of the whole earth, in such quantity as he might see fit, and reasonably expect their early delivery on his doorstep, he could at the same moment and by the same means adventure his wealth in the natural resources and new enterprises of any quarter of the world, [and] he could secure forthwith, if he wished it, cheap and comfortable means of transit to any country or climate without passport or other formality.”
oh Keynes, what would you say now.