Jonathan Kravis and the other federal prosecutors who closed the Stone case had not spoken publicly about it, and the op-ed violates Kravis' silence as to why he left and how he thought Barr had handled the case.
"In both cases, the department underwent the work of career employees to protect an ally of the president, an abdication of the commitment to equal justice under the law," Kravis wrote. "Prosecutors must make decisions based on facts and law, not on accused political connections. When the department takes steps that it would never take in any other case to protect an allied president, it betrays this principle."
He added that other prosecutors who dealt with the cases are still employed by the DOJ and "obliged to remain silent."
"I am convinced that the department's conduct in the Stone and Flynn cases will do lasting damage to the institution," he added.
Stone was convicted in the trial of seven counts of obstruction, lying to Congress and tampering with witnesses and received a 40-month prison sentence. He appeals.
The prosecutors had originally asked Stone to be sentenced to seven to nine years in prison, but Barr later said it was too long.
"At the time, I thought the handling of the Stone case, with senior officials intervening to recommend a lower verdict for a longtime ally of President Trump, was a catastrophic mistake the department would not make again. I was wrong," she said. He writes.
Late last month, Kravis told CNN that his resignation from the Justice Department was "the most painful work experience" of his career, but he refused to say much else about the Stone case and his departure. Instead, Kravis explained that his new job as a public corruption specialist working for the state attorney for Washington, DC, will largely focus on expanding the city's ability to pursue criminal cases against public officials, investigating campaigns and other local issues. This could potentially include Trump.
The opinion comes days after the Justice Department decided it dropped the criminal case against Flynn, Trump's first national security adviser, whose lie about his contacts with Russia prompted Trump to fire him three years ago and Special Counsel Robert Mueller for turning him over to cooperate in Russia – investigation.