"That was an excuse by the Democrats who lost an election that some people think they shouldn't have lost", Trump said of the investigation.
And he promised he would tell Mueller just what he told reporters Friday: that he "didn't say" to Comey that he wanted him to drop a bureau's probe of Flynn, his first national security adviser to whom he became close during the campaign season.
Comey said that he'd carefully documented his interactions with Trump because he anxious Trump would misrepresent them, and accused the administration of spreading "lies, plain and simple" about the reasons for his firing.
Trump was publicly silent while Comey testified on Thursday, but tweeted Friday an accusation that Comey - whom Trump fired in May - lied under oath.
During nearly three hours of statements Thursday before the Senate Intelligence Committee, Comey described himself as "stunned" by Trump's "very disturbing" and "very concerning" behavior in several of their meetings.
The House intelligence committee sent a letter Friday asking White House counsel Don McGahn whether any tape recordings or memos of Comey's conversations with the president exist now or had existed in the past. He said that his testimony provided a harsh backstory that strongly suggested that Donald Trump had tried to influence his handling of the matter.
"You're going to be very disappointed when you hear the answer, don't worry", Trump said seconds after insisting he was "not hinting at anything". Trump wrote at 6:10 a.m. But he never said that he thought the president had obstructed justice.
WILLIAM BRANGHAM: This led to another question for the president. King asked Comey, "Would you, do you take that as a directive?"
"It crossed a boundary that the president should not have crossed". We are doing really well.
Meanwhile, Democratic lawmakers and other critics say Comey's clams that Trump leaned on him to somehow drop the Russian Federation investigation could amount to an obstruction of justice.
TRUMP: 100 percent. I didn't say...
"I hardly know the man [Mr Comey]", he said. Trump added, "I hardly know the man; I'm not going to ask him to pledge allegiance".
Many have made the argument that Trump's request cannot be considered obstruction of justice because he used the word "hope" and did not tell Comey directly to end the investigation. On Thursday, Comey testified that not only did he reassure Trump on several occasions, but that he, Comey, saw absolutely nothing wrong in his actions.