Last week, I became a whistleblower. (According to Merriam-Webster, a whistleblower is someone "who reveals wrongdoing within an organization to the public or to those in positions of authority.") This is not a role I expected or sought, but I felt compelled to go public when the U.S. Institute of Peace, in Washington, D.C., the taxpayer-funded organization to whose board President Bush appointed me, insisted on co-hosting an event with a group closely associated with radical Islam. That group is the Washington-based Center for the Study of Islam and Democracy; the event was a workshop that took place — over...