Judge Throws Out Warrantless Wiretaps

Not too long ago, a federal judge has ruled that the warrantless wiretaps are unconstitutional (story: http://www.msnbc.msn.com/id/14393611/)

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This is entirely expected, as not only does the Constitution prohibit the government from wiretapping without a warrant, but the law that put together the secret FISA court specifically states that warrants are needed.
One line from the above article was interesting:

"The government argued that the program is well within the president's authority, but said proving that would require revealing state secrets."

I wonder if they know that "its lawful for secret reasons" is not a very good defense.