Nadler, D-N.Y., said it was too early to say whether Congress would pursue impeachment proceedings based on the illegal payments alone because lawmakers would need to weigh the gravity of the offence to justify "overturning" the 2016 election.
The 40-page sentencing memo filed by the U.S. Attorney's Office for the Southern District of NY for former Trump personal attorney Michael Cohen is the basis for an indictment against the president, according to Andrew McCarthy.
Nadler said lawmakers will have "to look at all this", along with weighing what special counsel Robert Mueller concludes about allegations that Trump and his campaign colluded with Russian Federation to help him win and that, as president, Trump obstructed justice by trying to thwart the ongoing 19-month probe.
A $150,000 payment by American Media Inc.to silence McDougal was an illegal corporate donation to the Trump's campaign, prosecutors claim.
Trump denied in April that he knew anything about Cohen's payments to Daniels, though the explanations from the president and his attorney, Rudy Giuliani, have shifted multiple times since then.
"This is a president named as a co-conspirator - allegations he committed at least two felonies to try to manipulate the 2016 election". We will try to get to the bottom of this in order to serve the American people and to stop this massive fraud on the American people.
Christie said that while he's always thought that the "Michael Cohen situation was much more perilous for the White House than was Bob Mueller", that the Mueller investigation remains a threat to Trump.
"Now the question that's presented just by Michael Cohen's plea and the Justice Department filing: Is a crime directed and coordinated by the president which helped him obtain office sufficient to warrant his removal from that office?"More news: How To Get Your Spotify 2018 Year In Review
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"I think what this totality of today's filings show that the House is going to have little choice, the way this is going, other than to start impeachment proceedings", Dean, a CNN contributor, said Friday on CNN's "Erin Burnett OutFront".
Trump has called for the end to the Mueller probe, but a Republican lawmaker, Senator Marco Rubio of Florida, told ABC News, "I've always supported the Mueller investigation and continue to do so because I think it's in the best interest of everyone involved, including, by the way, the president". "Pardons should be used judiciously".
"I have great respect for Bob Mueller and if he feels that Cohen is confiding now honestly about it, that's a pretty good indication that's what he's doing", he said.
Two Justice Department reports, one in 1973 and one in 2000, came to the same conclusion.
A Senate Democrat, Chris Murphy, echoed Nadler in cautioning that "it's important to get the full report from the special investigator", Robert Mueller.
"Let's be clear: We have reached a new level in the investigation", Murphy said.
Nadler spoke on CNN's "State of the Union", Rubio was on CNN and ABC's "This Week", and Schiff appeared on CBS' "Face the Nation".
In June, Mr Giuliani told NBC's Meet the Press that while Mr Trump "probably does" have the power, pardoning himself would nevertheless "be unthinkable and probably lead to immediate impeachment".