Rod Rosenstein: Save yourself.

For years, the man who just became the No. 2 official in the Justice Department painstakingly built a reputation as a gifted prosecutor and an above-the-fray lawman, serving Democratic and Republican administrations alike.

Now, just over two weeks into his new job, he has become a national joke.

He has destroyed his credibility by giving cover and legitimacy to Trump’s decision to fire FBI Director James B. Comey, the man overseeing the agency’s probe of the Trump campaign’s possible collusion with Russia in tilting the 2016 election Trump’s way.

Rod J. Rosenstein. (Melina Mara/The Washington Post)

The Post reported that Rosenstein threatened to resign because the White House was turning him into a stooge. Others matched the Post report. But Rosenstein says: No, he made no such threat.

So he therefore must be content in the work environment he just joined. In case he missed it, this is what we’ve seen from that administration this week:

●The White House press secretary, Sean Spicer, hiding among the bushes on the White House north lawn and demanding that journalists turn off their camera lights before he would speak to them about the Comey affair.

●Comey learning that he had been fired when he saw it on TV on a West Coast swing; he thought it was a prank.

●The White House offering a profusion of conflicting accounts about Comey’s dismissal, culminating in Trump contradicting his own aides by saying he would have fired Comey even if Rosenstein hadn’t written that preposterous memo citing the Clinton email case.

●The White House blocking American reporters and photographers from covering Trump’s meeting with Russian Foreign Minister Sergei Lavrov but admitting a photographer from the Russian state news agency Tass, which published photos of the meeting.

●The president going on Twitter to attack, again, a Democratic senator for mischaracterizing his military service years ago and to renew his long-standing feud with Rosie O’Donnell.

●The very same president registering the approval of just 36 percent of the country in a new Quinnipiac University poll. When Americans were asked to volunteer a word that comes to mind when they think of Trump, the top answer was “idiot.”

But the most surreal happening this week was none of the above. It was the Wall Street Journal’s report that Rosenstein “pressed White House counsel Don McGahn to correct what he felt was an inaccurate White House depiction of the events surrounding FBI Director James Comey’s firing.” The Journal reported that “Rosenstein left the impression that he couldn’t work in an environment where facts weren’t accurately reported.”

Rosenstein can’t work in an environment where facts aren’t accurately reported? And yet he goes to work for the alternative-fact president, who, by The Post’s Fact Checker’s tally, churned out 492 false and misleading claims in his first 100 days?

Rosenstein is either the most naive man in town, or he’s not the honest man we all thought him to be. Let’s give him the benefit of the doubt and assume he’s an ingenue who was chewed up and spit out by the Trump White House, which commandeered his unsullied reputation to justify its Comey sacking and left his once-vaunted standing in tatters.

In that case, Rosenstein needs to wake up to the reality that he has been — and continues to be — used by Trump and his defenders to provide a veneer of legitimacy to the president’s decision to eliminate the head of the Russia probe.

Trump may now say he would have fired Comey anyway, but everybody else has used Rosenstein, and his three-page memo justifying Comey’s dismissal, as cover.

Senate Majority Leader Mitch McConnell (R-Ky.) : “Mr. Rosenstein recommended Mr. Comey’s removal.”

Spicer: “It was all him. . . . No one from the White House. That was a DOJ decision.”

Senate Republican Conference Chairman John Thune (S.D.): “They decided to take this action, based upon a recommendation from Rob Rosenstein, who was just confirmed by the Senate, 94-6, a couple of weeks ago, and a man who people have a tremendous amount of confidence in.”

Senate Majority Whip John Cornyn (R-Tex.): “Democrats who were praising Rod Rosenstein and saying he was exactly the kind of person we needed . . . seem to forget their very own conviction and vote on Rod Rosenstein and say he can’t be fair.”

Rosenstein now makes Comey look like Solomon. If he cares at all about rehabilitating the reputation he built, Rosenstein has one option: He can appoint a serious, independent and above-reproach special counsel — the sort of person Rosenstein was seen as, until this week — to continue the Russia probe.

Rosenstein may never recover his honor. But this is his only chance.

Twitter: @Milbank

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