It would not be hard at all to make higher education completely free in the USA. It accounts for not quite 2% of GDP. The personal share, about 1% of GDP, is a third of the income of the richest 10,000 households in the U.S., or three months of Pentagon spending. It’s less than four months of what we waste on administrative costs by not having a single-payer health care finance system. But introduce such a proposal into an election campaign and you would be regarded as suicidally insane.