Senator Rand Paul (R-Ky.) has been recruiting potential plaintiffs, considering a class-action lawsuit against the National Security Agency to try to halt its massive phone records collection. Judge Richard Leon’s ruling Monday that the collections are a violation of the Fourth Amendment may be tipping the senator’s hand toward pushing ahead.

A staffer spoke with U.S. News:

The senior staffer, who spoke with U.S. News on background, says hundreds of thousands of people volunteered online as possible plaintiffs after Paul first floated the idea of a class-action lawsuit in June.

The senator has not firmly decided to file suit and it's still possible Paul will choose to instead assist with three already-filed lawsuits against the NSA.

If Paul does file a lawsuit it would be the fourth major legal attack against the NSA's bulk collection and five-year storage of American phone records.

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