During her congressional testimony today, Secretary of State Hillary Clinton repeatedly defended her failure to see key cables dealing with Benghazi by noting how many cables the State Department receives. She explained there are 1.4 million cables to the department a year, all addressed to her as secretary. That’s wrong — and this poor excuse is worth examining. In fact, every cable sent from the department is signed “Clinton” as long as she is in Washington. If not, each cable bears the name of the acting secretary — usually deputy secretary Bill Burns. But it’s obvious that these cables are...