Correct me if my memory is incorrect, but I recall Congress issuing a subpoena for Terri Schiavo to appear before a Congressional committee, but the subpoena was never enforced.
In other words, the judges worked under the assumption that the politicians did not have the will power to face off in a constitutional battle.
I remember that subpoena, and I remember that the judge ignored it and he went uncensured, unimpeached and unpunished. If only our Congress and President would handle meddling judges equally dismissively.