Only a few weeks ago Hillary Clinton’s campaign was denouncing Donald Trump as un-American for saying the election might be “rigged.” We criticized Mr. Trump at the time. But now that Mrs. Clinton has lost, her campaign is claiming the election really was rigged, albeit for Mr. Trump by Russian meddling, and it wants the Electoral College to stage what amounts to a coup.

That’s the only way to interpret the extraordinary statement Monday by Clinton campaign chairman John Podesta endorsing a special intelligence briefing for...