It wasn't clear whether the President was basing his tweet on direct knowledge that he is under investigation, or on reports this week that special counsel Robert Mueller is examining whether the President obstructed justice by firing Mr. Comey in May 2017 amid the ongoing Russian Federation investigation.
In his tweet, Trump appeared to be referring to Deputy Attorney General Rod Rosenstein, who wrote a memo recommending that Comey be fired. ABC notes that, at this point, Rosenstein has "privately acknowledged" that he might eventually be called at a witness in the investigation, largely because he penned the memo that led to former FBI Director James Comey's firing.
Rosenstein has authority over the inquiry because Attorney General Jeff Sessions recused himself on March 2 after revelations of previously undisclosed meetings with Russia's ambassador to Washington while he was a Trump campaign adviser. The White House press office immediately pointed to Rosenstein's detailed memo as the justification for Comey's surprise termination.
And if Rosenstein and Brand were both out of the picture, responsibility for the investigation would fall to Dana Boente, the acting head of the department's national security division and the current USA attorney for the Eastern District of Virginia.
"I can't imagine the special counsel completing this investigation without hearing the testimony from the deputy attorney general", Turley said.
Rosenstein, 52, has said little publicly, but a cryptic statement he released late Thursday captured some of the strain and frustration he is probably feeling about the numerous unauthorized leaks about the Russian Federation investigation that have angered the president, according to several of his colleagues and friends.More news: S.Korea finds apparent North Korean drone near border
More news: People 'Are Missing,' Presumed Dead After London Tower Blaze
More news: Donald Trump is considering just firing special counsel Robert Mueller
Why would Rosenstein have to recuse himself?. And that leaves Brand as the next highest Senate-confirmed official in the Department of Justice.
It's the first time Rosenstein has made public comments about the matter.
Until Trump's Friday-morning Twitter burst, only the Washington Post's sources had indicated that Trump was being investigated for possible obstruction of justice. "Witch Hunt", the president said on Twitter. As the associate attorney general, she's responsible for overseeing the lawyers who deal with civil rights, environmental, and antitrust issues.
US President Donald Trump said that he was under investigation for firing the former director of the Federal Bureau of Investigation. Rosenstein also insisted Mueller's investigation would have the resources it needs.
Tim Maloney, a Maryland lawyer who has worked with Rosenstein, said he is going to handle the decision of whether to recuse himself in the oversight of the special counsel's Russian Federation investigation "by the book". After review, if the acting attorney general thinks the indictment is "inappropriate or unwarranted", then he or she could block the indictment.
The current probe is one of the most important and politically charged in recent history. Rachel Brand could be the next name to know.