In 1961-62, John Kennedy won Republican congressional and public support with the proposals of his Keynesian Council of Economic Advisers chairman, Walter Heller, to cut personal and business taxes "to get America moving again, " and for the global free movement of goods, services, capital and people.

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"Liberals believe in open societies and in an open, global economy and with the principles of free trade and free movement of goods, capital, services and people, " he said.

BBC: Immigration debate