On Monday, Mr. Ratcliffe seemed to bolster an unconfirmed news report by The New York Post related to the business dealings of Joe Biden’s son in the Ukraine. Mr. Ratcliffe suggested on Fox Business that the Obama-Biden administration had committed (unnamed) criminal abuses of power and that voters should take these supposed actions into account in the upcoming election.

Such personal political commentary for a sitting intelligence leader is virtually unprecedented. Michael Hayden, a former director of the National Security Agency and the Central Intelligence Agency, tweeted that Mr. Ratcliffe’s actions were “reprehensible” and worthy of a “tin-pot dictatorship.”

Mr. Ratcliffe had already broken norms by mining and declassifying material that might help President Trump get re-elected. He has controlled how information is shared with congressional Democrats, while supplying select, out-of-context material to those Republicans trying to grasp any shred of evidence that might fit their theory of a deep-state conspiracy to investigate President Trump’s connections to the Kremlin.