In many ways the flood of bold, progressive policy proposals coursing across America's political landscape began in 2015, when Bernie Sanders, an independent senator from Vermont, put a plan to make higher education at public universities free at the centre of his upstart campaign for the presidency. Then the idea seemed radical, even gimmicky. Now it is noteworthy when leading Democrats oppose the notion. Yet some do, for example Pete Buttigieg, the mayor of South Bend, and their arguments still pack a punch. Why indeed should taxpayers' money be spent on the children of the rich rather than more generous financial aid for the poor? The Democratic debate over free college is in fact part of a deeper disagreement about how best to structure a welfare state.
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