Don't mess around with Congress

Looseheadprop gives the super-cliff notes version (and many good links) on what Congress can do if it really wants to. Congress can hold an inherent contempt trial of Harriet Miers -- the Sgt. at Arms of the House arrests her, beings her to the DC jails (which Congress, not the Executive branch controls) and then Congress finds her in contempt and holds her until she is willing to testify or the term of Congress expires. Of course, if Congress even started to put this in motion, all sorts of odd things would happen -- the most likely of which (I hope) is that she would testify (even if it would be a typical AGAG non-responsive testimony). Just making the threat and getting her to show up would at least go some of the way to reasserting Congress' powers.

But it would be sort of fun if it came down to the down and dirty...