Rep. Maxine WatersMaxine Moore WatersHouse Democrat agenda, led by minimum wage, threatens economic prosperity Community banks a bipartisan touchstone for new Congress Dem women rally behind Pelosi MORE (D-Calif.) on Thursday suggested that President TrumpDonald John TrumpTrump: WHCA picking non-comedian for headliner a 'good first step' Five takeaways from Mississippi's Senate debate Watergate’s John Dean: Nixon would tell Trump 'he's going too far' MORE could be charged with obstruction of justice, after he cited ongoing investigations into Russian election meddling in his explanation of why he fired FBI Director James Comey.

"I think he can be looked at and perhaps even charged with obstruction of justice," Waters said on MSNBC's "All in with Chris Hayes". "I've said all along that he would lead us to impeachment and he's doing just that."

Trump told NBC's Lester Holt in an interview aired Thursday that he had made the decision to fire Comey on his own, directly contradicting the White House's claim that he had ousted the FBI director after Deputy Attorney General Rod Rosenstein recommended it. 

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“Regardless of recommendation, I was going to fire Comey,” Trump said.

“And in fact, when I decided to just do it, I said to myself, ‘You know, this Russia thing with Trump and Russia is a made up story,’” he added.

Comey's abrupt firing drew unanimous condemnation from Democrats, who questioned Trump's timing and justification for his decision. Waters called for Trump's impeachment on Thursday, saying that ongoing federal investigations into the Trump campaign's alleged ties to Moscow would prove collusion between the two.

"If we do the investigation, the information is there. We're fiddling while Rome is burning," she said. "This president needs to be impeached. I believe that. I believe there was collusion."

In fact, there is no evidence of collusion between the Trump campaign and the Kremlin at this point in time, and the president has fervently denied any wrongdoing or improper ties with Russia.

"This was set up by the Democrats. There's no collusion between me and my campaign and the Russians," Trump said in the Thursday interview. "The other thing is, the Russians did not affect the vote, and everybody seems to think that."