In an Aug. 26 letter, the Intelligence Community’s inspector general, Michael Atkinson, wrote that the anonymous whistleblower who set off the Trump-Ukraine impeachment fight showed “some indicia of an arguable political bias … in favor of a rival political candidate.”

A few weeks later, news reports said the whistleblower’s possible bias was that he is a registered Democrat. That was all. Incredulous commentary suggested that Republicans who were pushing the bias talking point were so blinded by their own partisanship that they saw simple registration with the Democratic Party as evidence of wrongdoing.