The most ambitious US presidency in living memory hardly needs to extend its list of tasks, you might think. Yet the country's long-term economic prospects turn on something that is all too easy to neglect, just as it has been neglected in the past. The US is failing calamitously in primary and secondary education. The average quality of its workforce is falling, and its schools are adding to the problem rather than mitigating it.
Much of what ails the country - including growing economic inequality - can be traced to this source. Politicians recognise the fact, and prate about it endlessly. Barack Obama puts improving the schools alongside health reform and alternative energy whenever he lays out his long-term goals.
The trouble is, fixing the schools is not something that a crisis ever forces you to do. The consequences of a third-rate education system creep up on you and, experience shows, can be tolerated indefinitely. Many vested interests prefer it that way. Talk about the issue and move on is the line of least political resistance.
Just how badly is the US school system failing? A new study by McKinsey bravely attempts to come up with some numbers - and its estimates, though arrived at conservatively, are pretty startling*.
According to the Programme for International Student Assessment, a long-term comparison project from the Organisation for Economic Co-operation and Development, the US lags far behind the industrial-country average in a standardised measure of maths and science skills among 15-year-olds. It sits among low-achievers such as Portugal and Italy, and way behind the best performers, such as South Korea, Finland, Canada and the Netherlands. It scores worse than the UK, which is about average on both measures.