He did allow for the possibility the men could have had a brief interaction "in passing" at a well-attended reception at the Mayflower Hotel before an April 2016 foreign policy speech by then-candidate Trump. The aide spoke on condition of anonymity because the meeting was private.
Investigations are now underway into Russian meddling in the 2016 election. That was not so, he said. He cited the recommendation of Attorney General Jeff Sessions, who has recused himself from the Russian Federation inquiry, and his deputy Rosenstein. Trump disputed, though, Comey's assertion he had asked for a pledge of loyalty.
"Why don't you tell me?"
The Washington Post and The New York Times both said Mr Mueller was seeking interviews with three Trump administration officials who were not involved in his campaign - director of national intelligence Dan Coats, head of the National Security Agency Michael Rogers and Richard Ledgett, the NSA's former deputy director.
Mueller was named by Deputy Attorney General Rod Rosenstein eight days after Comey's dismissal to lead the Russian Federation investigation as a special counsel, a position created to conduct investigations when a normal Justice Department probe would present a conflict of interest or in other extraordinary circumstances.
Chatter surfaced earlier this week that the president was considering firing Mueller.
Trump dismisses obstruction of justice investigation with 'nice' tweet
Rosenstein, who has been on the job for six weeks, said only he could fire Mueller, and only if he found good cause to do so. Mueller served as Federal Bureau of Investigation director prior to Comey was appointed to that position in September 2013.
Rosenstein named Mueller as special counsel last month to lead the inquiry into Russia's meddling in last year's United States presidential campaign and whether anyone close to Trump colluded in that effort.
The Senate Intelligence Committee has interviewed Johnson about the matter.
The committee leaders said in a statement that they "look forward to future engagements" with Mr Mueller.
Graham also wants to question Comey about his leaking of a memo to the press in order to prompt the naming of a special counsel. He says he does not believe there is now enough evidence to prove the charge against Trump.
Sessions criticized Comey's handling of the Hillary Clinton email investigation, which the White House had initially cited as the ostensible reason for his firing.
"We're not the Federal Bureau of Investigation, we're not the Department of Justice, we're the legislative branch".
Oil set for longest run of weekly losses since 2015 amid glut
Producers outside the OPEC deal are increasing output, the International Energy Agency (IEA ) said. The US production has also increased by 10% over the past year .
Here is what I found interesting: Comey testified that members of the Senate and Congress also knew that President Trump was not, and had never been, under investigation. "I'm not sure what was in his mind specifically".
Trump and his supporters cast Comey's testimony that he had told the president he was not personally under investigation as vindication.
The Senate Intelligence panel already held a high-profile public hearing with Comey. "The President has the right to do that".
Sessions maintained that he had not been briefed on the Russian Federation investigation between the time of his February swearing-in and his March 2 recusal.
The Twitter attacks came as Vice President Mike Pence hired a personal lawyer to represent him in the intensifying investigation. I don't even read that carefully.
Obstruction of justice is the crime of taking actions to interfere with an official investigation. Marco Rubio, R-Fla., asked Sessions whether Trump records his conversations in the White House. Trump said in a follow-up message.
E3 2017: Cross-console Minecraft and Super Duper Graphics Pack announced
If you're interested in getting Minecraft Realms on PlayStation, your best bet is to poke the lovely people at Sony for answers. There was no mention of the Xbox One X console unveiled a day earlier by rival Microsoft in a heightened challenge to PS4.
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