The investigation into ties between President Trump's campaign and the Russian government has now turned to investigating Trump himself for obstruction of justice, the Washington Post reported Wednesday.
In a second tweet, Trump touted his "powerful" presence on social media, despite widespread criticism that his recurring rants on Twitter and other online media have only compounded his legal and political problems.
Shortly after Trump fired Comey, a Justice Department official tapped Mueller to take up the investigation as a special counsel. Last month, Rosenstein sent a memo to Trump raising concerns over FBI Director James Comey - concerns the White House then cited as a central reason for Comey's firing.
On June 15, deputy attorney general Rod Rosenstein released a statement urging Americans to treat anonymously sourced news stories about the DOJ probe with caution.
Obstruction of justice is a potentially impeachable offense. Comey said he believes Trump ultimately fired him "because of the Russian Federation investigation". "Nice", the president tweeted.
Aides have counseled the president to stay off Twitter and focus on other aspects of his job.
Recently, Comey made a startling revelation, accusing the White House of "lies". While the investigation had originally been focused on potential collusion between the Trump campaign and Russian Federation, the Post reported, the obstruction inquiry began after Trump fired Comey.
The tweets came shortly after Rosenstein issued his unusual statement that appeared to be warning about the accuracy of such reports. Americans should be skeptical about anonymous allegations.
The transition official spoke on condition of anonymity because the person was not authorized to discuss post-election decisions publicly.
Sanders told reporters during an off-camera gaggle Thursday that the meeting should not be considered a conflict-of-interest since Trump was not aware that special counsel would be named. What is clear is that he could order the Justice Department to ax Mueller, which may result in Rosenstein's departure and would certainly intensify the uproar over the investigation.
But should Trump be under investigation?
Trump, however, has denied asking Comey for a pledge of loyalty.
Rosenstein told a Senate Appropriations subcommittee Tuesday that he saw no cause for Mueller's dismissal.
The Trump tweets come after the top lawyer for his transition team warned organization officials to preserve all records and other materials related to the Russian Federation probe.