Both Judge Richard Leon and Judge William Pauley, in their respective decisions about the constitutionality of NSA’s spying upon Americans by collecting and maintaining all telephony metadata, relied on the 1979 Supreme Court opinion of Smith v. Maryland. While privacy did poorly in the decision, the opinion was factually relevant and clearly the appropriate precedent to consider.
Many are familiar with Smith as the decision approving of the warrantless use of pen registers, which Justice Harry Blackmun held permissible under the Third Party Doctrine, as failing the objective prong of Katz’s reasonable expectation of privacy test.
The first is whether the individual, by his conduct, has “exhibited an actual (subjective) expectation of privacy,” —whether, in the words of the Katz majority, the individual has shown that “he seeks to preserve [something] as private.” Continue reading

