And while Pelosi clearly still believes that impeachment could mess up promising Democrats plans to beat Trump in 2020, others are convinced beginning the process is the best and only way to dramatize his crimes and corruption in order to beat him.
Administration figures also said this week Trump would claim executive privilege to block ex-White House Counsel Don McGahn from testifying before Congress.
The haste with which House Democrats have issued subpoenas and promise more is itself a reflection that time is on Trump's side, not Congress', Prakash said.
Now 37 percent of Americans favor starting the process that could lead to impeachment, a slight dip over the past month, while 56 percent say they oppose the idea, about the same as a month ago.
Only 37 percent of Americans polled said that they thought the president should be impeached.
Special counsel Robert Mueller's 22-month investigation did not establish a criminal conspiracy between Trump's campaign and Russian Federation to influence the presidential outcome but revealed that Trump tried to seize control of the Russian Federation investigation.
With the release of the Mueller report, some Democrats are calling for Congress to begin impeachment proceedings.
The president added: "If I wanted to fire Mueller, I didn't need McGahn to do it, I could have done it myself".
The Trump campaign has helped pay legal bills for a number of current and former Trump associates caught up in various investigations and lawsuits, including the president's son Donald Trump Jr. and son-in-law Jared Kushner. Among Republicans, 61 percent say they believe Mueller's investigation cleared Trump of all wrongdoing, while 87 percent of Democrats say it did not.
On "Meet the Press", Nadler questioned Mueller for not charging Donald Trump Jr. for criminal conspiracy over the Trump Tower meeting, because, according to his analysis, the goal of meeting was to obtain material stolen from Hillary Clinton.
Isn't it incredible that the people who were closest to me, by far, and knew the Campaign better than anyone, were never even called to testify before Mueller.
The White House has not yet said to whom Trump was referring in his tweet. "The speed with which we've come to an impasse is different" from past fights over documents and testimony that involved at least a semblance of negotiations, he said.
But 2020 Trump campaign adviser Marc Porter says the USA president is clearly exonerated. Overall results have a 3.5-percentage-point margin of sampling error for the full sample.