After 36 years, I’m fleeing what was the U.S. Department of Justice — where I proudly served 19 different attorneys general and six different presidents. For the last three-plus decades, I have respected our leadership regardless of whether we were led by a Republican or a Democrat. I always believed the department’s past leaders were dedicated to the rule of law and the guiding principle that justice is blind. That is a bygone era, but it should not be forgotten. Maybe I should’ve seen this coming, but like many of my colleagues, I fervently hoped that Attorney General William Barr’s...