We don’t know for sure, but signs suggest that the answer is probably yes.
The Washington Post reports that Bryan Pagliano, the former State Department staffer who may have set up and maintained Hillary Clinton’s “homebrew” server, has been “granted immunity” by the Justice Department. The Post describes its source as a single, senior law-enforcement official — though I assume the paper corroborated its source before running with the story (which Politico elaborates on).
This important development raises a question we have considered before: Is there an active grand-jury investigation of Mrs. Clinton and her aides over their mishandling of classified information? The question is critical because (with exceptions not relevant to this discussion) the convening of a grand jury is a necessary precondition to the filing of a felony indictment. And the answer to the question is . . . probably, though not necessarily.