Sen. Claire McCaskill, D-Mo., has been in damage control mode all day after she was caught falsely claiming she has never ever met with a Russian ambassador in her capacity as a member of the Armed Services Committee. Unfortunately, the truth of her bogus charge came out only after MSNBC and CNN gave it uncritical coverage. As is usually the case with these media misfires, this story requires some unpacking. Attorney General Jeff Sessions announced Thursday afternoon he would recuse himself from...