Atrios and Matt Yglesias point out that the Administration is on a treadmill of illegality. Evidence based on illegal wiretaps or on torture can’t be introduced in court. So illegal action makes it impossible to get court approval for further steps, making more illegal actions inevitable.
Shakespeare’s Richard III found himself in the same position:
Uncertain way of gain! But I am in
So far in blood that sin will pluck on sin.
Footnote Ben Azzai says (Pirke Avot 4:2) “The penalty for each transgression is the next transgression.”