Rosenstein, in office for less than two months, is the top Justice official overseeing the probe because Attorney General Jeff Sessions has recused himself.
According to Comey, Trump was referring to the FBI's investigation into Mike Flynn, who was sacked himself as national security adviser months earlier for allegedly lying to White House officials about his post-election contacts with Russian operatives.
Rosenstein was among those who advised Sessions to recuse himself, according to officials briefed on the matter.
President Trump fired off tweets Friday morning attacking the special counsel's investigation into Russian meddling in the 2016 election, and apparently, Deputy Attorney General Rod J. Rosenstein. Trump had viewed Sessions' recusal as unnecessary, even though Justice Department regulations made it nearly impossible to avoid.
Harbaugh talks up another European trip for Wolverines
With all the publicity around his intentions, you would expect that the Obama duo knows that this invitation is coming by now. The coach already announced earlier this year that recording artist Usher will serve as an honorary captain this season.
The U.S. Justice Department says Deputy Attorney General Rod Rosenstein has no immediate plans to recuse himself from overseeing the special counsel's investigation into Russian influence, though he reportedly told colleagues he may need to take that step. There's also the fact that Trump admitted in a televised interview to firing the former FBI Director to end the Russian Federation probe, but why let that get in the way of things when you have a DOJ employee to kick around? "Witch Hunt", the president said on Twitter.
Read the full report on ABC News.
Robert Mueller reports to Rosenstein, but is authorized to pursue the investigation independently. Comey's firing likely will be part of that probe.
Rod Rosenstein recommended to President Trump that he fire former FBI Chief James Comey, though also made a decision to bring in Robert Mueller, now the probe's special counsel.
Friend Claims Trump 'Considering' Firing Mueller, Schiff Says 'Don't Waste Our Time'
Less than a month ago, he called Mueller a "superb choice", someone whose "reputation is impeccable for honesty and integrity". The Post report cited anonymous sources who were briefed on requests made by investigators. "Time to rethink", he added .
Rosenstein, who authored an extensive and publicly-released memorandum recommending Comey's firing, raised the possibility of his recusal during a recent meeting with Associate Attorney General Rachel Brand, the Justice Department's new third-in-command, according to sources.
Sessions had already recused himself from the investigation, testifying earlier this week that he did so because he had worked on the Trump campaign.
The poll also found that there is a growing level of concern regarding the contact that Trump's affiliates had with Russian officials over the course of a year ago.
"Americans should exercise caution before accepting as true any stories attributed to anonymous 'officials, ' particularly when they do not identify the country - let alone the branch of agency of government - with which the alleged sources supposedly are affiliated", Rosenstein's statement said.
Four players tied for US Open lead
Harman, a two-time PGA Tour victor from Georgia, said, "I was pretty nervous this morning and I got off to a little shaky start". His nine-under tour of rain-softened Erin Hills eclipsed the eight-under-par 63 carded by Johnny Miller in winning the 1973 U.S.
A Justice official said Rosenstein was motivated in part because of frustration that recent news stories have unfairly brought on a torrent of "leak" accusations against the Federal Bureau of Investigation and Mueller's team.
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