Leadership: The president is at it again, bad-mouthing the U.S. abroad. Last week he told Australians that our kids are "behind" in education and that the solution is —what else? —more government spending. Let's unpack that.To start, normal presidents don't go around to other countries telling the locals that their country's schoolchildren are underachievers. Not Obama. "A lot of poor children don't get the support they need when they're very young," Obama told a roomful of inquiring students down under. "So by the time they get to grammar school, they're behind."From that, Australians can only take home the message that...