Obsidian Wings sends us to Dan Froomkin with respect to Monica Goodling, Alberto Gonzales, and George W. Bush:
Obsidian Wings: Taking The Fifth: Dan Froomkin also makes a good point about Goodling's lawyer's letter:
And he cites "numerous examples of witnesses who gave testimony before Congress and then faced criminal investigations and even indictments for perjury, false statements, or obstruction of congressional proceedings, including United States v. Poindexter, United States v. North, United States v. Safavian, and United States v. Weissman. . . .[T]he potential for legal jeopardy for Ms. Goodling from even her most truthful and accurate testimony under these circumstances is very real. One need look no further than the recent circumstances and proceedings involving Scooter Libby."
But here's one thing all those people had in common: They lied.
Impeach them all. Now.