President Trump deployed the pardon power corruptly for the third time, granting a reprieve to Dinesh D'Souza, a racist, right-wing conspiracy theorist, who pleaded guilty in 2014 to making illegal campaign contributions. Trump also floated the possibility of further pardons for people who have been convicted of the kinds of crimes for which his associates are currently under investigation! Weird coincidence!
Earlier this year, Trump pardoned Scooter Libby—Vice President Dick Cheney's former chief of staff—for obstruction of justice and perjury convictions. Last year he pardoned Joe Arpaio—the racist and inhumane former Maricopa County, AZ sheriff—for criminal contempt of court.
The thread connecting these pardons (other than the fact they’re all politically connected Republicans) is that they pertain to the same family of crimes that Special Counsel Robert Mueller is investigating. Campaign violations. Abuse of power. Obstruction. The message to subjects of the Russia investigation is: Hang tight, don't squeal, perjure yourself if necessary, and a pardon will await you too. He can do it with a tweet if he wants! It’s a neat constitutional power.
Trump, after all, has every reason to be concerned that his associates will flip on him. His indicted campaign manager, Paul Manafort, is proclaiming his innocence. His personal lawyer, Michael Cohen, is expected to be indicted soon, as is his political adviser Roger Stone. Both men have professed their loyalty to Trump and promised not to turn on him—for now. The pardon dangle seems intended to persuade them not to.
It’s hard to overstate how serious an abuse of power this is, and why it's so important that Mueller is cooperating with state attorneys general. If Trump grants pardons to people like Manafort and Cohen, it still wouldn’t prevent them from being tried and convicted in state courts, which means they still have an incentive to cooperate with prosecutors.