U.S. Admits Surveillance Violated Constitution At Least Once

Spencer Ackerman writes:

The head of the U.S. government’s vast spying apparatus has conceded that recent surveillance efforts on at least one occasion violated the Constitutional prohibitions on unlawful search and seizure.

The admission comes in a letter from the Office of the Director of National Intelligence declassifying statements that a top U.S. Senator wished to make public in order to call attention to the government’s 2008 expansion of its key surveillance law.