From federal judge Colleen McMahon after acknowledging that disclosure of the government's legal
justification for targeting American citizens for assassination might
help the public "understand the scope of the ill-defined yet vast and
seemingly ever-growing exercise in which we have been engaged for well
over a decade, at great cost in lives, treasure, and (at least in the
minds of some) personal liberty":
However, this Court is constrained by law, and under the law, I can
only conclude that the Government [...] cannot be compelled by this
court of law to explain in detail the reasons why its actions do not
violate the Constitution and laws of the United States. The
Alice-in-Wonderland nature of this pronouncement is not lost on me; but
after careful and extensive consideration, I find myself stuck in a
paradoxical situation in which I cannot solve a problem because of
contradictory constraints and rules — a veritable Catch-22. I
can find no way around the thicket of laws and precedents that
effectively allow the Executive Branch of our Government to proclaim as
perfectly lawful certain actions that seem on their face incompatible
with our Constitution and laws, while keeping the reasons for their
conclusion a secret. But under the law as I understand it to
have developed, the Government's motion for summary judgment must be
granted, and the cross-motions by the ACLU and the Times denied.
Needless to say, Congress could change this if it wanted to. Apparently it doesn't.