All the best people...

...leave.

Joel McElvain, who has worked at the Justice Department for more than 20 years, submitted his resignation letter Friday, the morning after Attorney General Jeff Sessions notified Congress that the agency will not defend the ACA — the 2010 law known as Obamacare — against lawsuits brought by Republican-led states challenging its requirement that most Americans carry health insurance.

[...]

Several colleagues said McElvain was in line to become director of the Justice Department’s federal programs branch, which handles complex government policy questions pending before the courts. It is not known for its politics but for the tenacity with which its lawyers defend the law — any law — passed by Congress.

[...]

The Justice Department’s decision last week reversed years of legal work McElvain and the Justice Department had performed on the issue.

McElvain and his team were honored in 2013 with the Attorney General’s Award for exceptional service defending the legislation in court. A Justice Department spokeswoman confirmed his resignation takes effect in early July. McElvain declined to comment.

  WaPo

...but hey, do what you want...you will anyway.