In a post about John Bybee, the Letter of Apology blog notes that talk of impeachment is premature, but…
…if DOJ professionals can make a reasoned argument that certain Bush-era legal memos sought merely to cover obviously illegal activities, let the investigations begin. After all, we investigate (and sometimes even prosecute) lawyers for fraudulently legitimizing tax fraud schemes with dubious letters of legal advice. I don’t see why dubious torture memos warrant different treatment. Just keep the politicians away. We don’t need any of Senator Leahy’s Truth Commissions.
I’ll go along with all of that.

Excellent point, indeed.
Bless Jerry Nadler, who says impeach Judge Jay Bybee and let him defend himself: http://www.huffingtonpost.com/2009/04/20/senior-judiciary-committe_n_189026.html.