Whoever knowingly and willfully, by any means or device whatsoever—
((a)) records, or attempts to record, the proceedings of any grand or petit jury in any court of the United States while such jury is deliberating or voting; or
((b)) listens to or observes, or attempts to listen to or observe, the proceedings of any grand or petit jury of which he is not a member in any court of the United States while such jury is deliberating or voting—