No ethicist could thrive in that environment 
Sounds like the perfect job for him:
“I am amazed he made it as long as he did. His client was the White House, but its head, the president, is as difficult an ethics subject as has ever occupied the Oval,” said Norm Eisen, the White House ethics czar in the Obama administration who’s emerged as a vocal critic of Trump. “No ethicist could thrive in that environment.”
'Passantino has been an aggressive force for defending the Trump administration’s practices, its training programs, and its oversight over officials within the executive branch.'
Walter Shaub: “On a professional level, he has been openly hostile to the government ethics program, like nothing we’d ever seen. He’s done more harm than good in his brief stint in the White House. His detrimental influence on the government ethics program under the Trump administration was a factor in my decision to resign.”
thehill.com/homenews/administration/398864-wh-lawyer-in-charge-of-policing-trump-officials-ethics-to-leave