The scandal of the century at the IRS was that agency’s secret targeting of conservative nonprofits. Perhaps a close second is the scandal of what the IRS hasn’t been investigating: the Clinton Foundation.

The media’s focus is on Hillary Clinton’s time as secretary of state, and whether she took official actions to benefit her family’s global charity. But the mistake is starting from the premise that the Clinton Foundation is a “charity.” What’s clear by now is that this family enterprise was set up as a global shakedown...