These cases do not say what you think they say. Please cite to the actual parts of the decision that discuss the legality of administrative subpoenas issuing for a criminal case rather than the admissibility of information provided in response to a civil subpoena by a third party. Recall that we are talking specifically about the use of a pen register in a criminal case brought by the DOJ, not random regulatory compliance required in highly regulated industries.

The FTC case is a civil case. The DOJ case does not even mention the word subpoena as far as I can see. The SEC case is a civil case.