Conor Friedersdorf hits the nail on the head:
When Sen. Ron Wyden, an Oregon Democrat, stopped by the Senate floor Wednesday to help out Rand Paul with his filibuster, he spoke for several minutes in the guise of asking a question. But his remarks can really be boiled down to one powerful sentence that I've transcribed:
Mr. President, what it comes down to is every American has the right to know when their government believes that it is allowed to kill them.
Ponder the modesty of that claim. He is merely asking that American citizens be given the most basic information about their legal system: when they're lawfully subject to capital punishment.
What would possibly justify withholding it?
The mere fact that multiple U.S. senators, civil-liberties organizations and journalists are having to hound the Obama Administration for answers is a scandal.