How Do You Spell Whitewash?

The Justice Department and CIA announced a joint inquiry Saturday into the spy agency's destruction of videotapes of interrogations of two suspected terrorists. I can see the future results now, "Well, we looked at it real closely and, by golly, we didn't do anything wrong after all! So, he-yuck, he-yuck, there is no reason for anyone else to bother looking into this."

How do you spell whitewash?