With an inane flourish of rhetoric, Washington is split between Friends of Rahm and Friends of Barack. “Arguably,” The Post’s Dana Milbank wrote two weeks ago, “Emanuel is the only person keeping Obama from becoming Jimmy Carter.” Judging from the maelstrom of columns, criticism, and comments Milbank unleashed (and from The Post’s front-page story Tuesday that heralded Emanuel as the White House’s “voice of reason”), the operative word in Milbank’s Carter comparison is “arguably.” Anointing Emanuel as the man who’s keeping Obama from driving the country straight into 1978, though, is a bit far-fetched. Doing so ignores the fact that...