Republican Senator Mitt Romney said Friday that he was 'sickened' and 'appalled' by what Special Counsel Robert Mueller's report revealed about President Donald Trump and his aides, as the leader's approval rating dropped 3 percent.

While most Republicans declined to comment on the explosive report, he chastised the GOP president and senior White House officials caught misleading the public.

'I am sickened at the extent and pervasiveness of dishonesty and misdirection by individuals in the highest office of the land, including the president,' Romney said in a Twitter statement.

'I am also appalled that, among other things, fellow citizens working in a campaign for president welcomed help from Russia -- including information that had been illegally obtained, that none of them acted to inform American law enforcement and that the campaign chairman was actively promoting Russian interests in Ukraine.'

Republican Senator Mitt Romney says he was 'sickened' by the Mueller report's descriptions of President Donald Trump, his campaign and the White House and their habit of misleading the public

While most Republicans declined to comment on the explosive report, he chastised the GOP president and senior White House officials

Released on Thursday after a nearly two-year investigation, Mueller's report detailed a huge amount of cooperative but not criminal contacts between Trump's 2016 election campaign and Russia that assisted the Republican against his Democratic rival Hillary Clinton.

The report also detailed numerous acts by the president that supported allegations of obstruction of justice, though Mueller, constrained by Justice Department rules, could not himself recommend charges against Trump.

Trump declared victory and exoneration after the report, and later labeled Mueller's work 'total bullshit.'

But other Republicans have been mute. Senator Marco Rubio tweeted Friday that Americans should be alarmed at Russian interference and 'relieved' that Trump didn't collaborate.

Romney, who in 2016 vied with Trump for the Republican presidential nomination, was alone among Republicans in criticizing the White House for its behavior.

Mueller described Trump and aides as habitually lying about their actions and running roughshod over principles of law a they battled the investigation.

'Reading the report is a sobering revelation of how far we have strayed from the aspirations and principles of the founders' of the United States, Romney said.

He seemed to be referring to glaring errors that Sarah Sanders, the White House press secretary, made among others. She admitted to the Mueller that she was wrong to say that 'countless' FBI agents told her they wanted James Comey fired.

He seemed to be referring to glaring errors that Sanders, the White House press secretary, and others made. She admitted to the Mueller that she was wrong to say that 'countless' FBI agents told her they wanted James Comey fired

She insisted on Friday that she did not mislead reporters with the false claim and said there were some FBI agents who agreed with Trump's decision to fire Comey.

As for her wording, she said she had 'acknowledged' it was a mistake and then made excuses for it, saying, 'It was in the heat of the moment meaning it wasn't a scripted talking point, I'm sorry that I wasn't a robot like the Democrat Party that went out for two-and-a-half years and stated time and time again that there was definitely Russian collusion between the president and his campaign.'

The number of Americans who approve of Trump dropped by 3 percentage points to the lowest level of the year following the release of the special counsel report detailing Russian interference in the last US presidential election, according to a Reuters/Ipsos public opinion poll.

The poll, conducted Thursday afternoon to Friday morning, is the first national survey to measure the response from the American public after the US Justice Department released the report that recounted numerous occasions in which Trump may have interfered with the investigation.

The number of Americans who approve of Trump dropped by 3 percentage points to the lowest level of the year following the release of the special counsel report. Trump is pictured Thursday at Palm Beach International Airport, Florida

According to the poll, 37 percent of adults in the United States approved of Trump’s performance in office, down from 40 percent in a similar poll conducted on April 15 and matching the lowest level of the year. That is also down from 43 percent in a poll conducted shortly after Attorney General William Barr circulated a summary of the report in March.

Conducted online in English throughout the United States, the poll gathered responses from 1,005 adults, including 924 who were familiar with the Mueller report. It has a credibility interval, a measure of precision, of 4 percentage points.

The poll found that 50 percent of Americans agreed that 'Trump or someone from his campaign worked with Russia to influence the 2016 election', and 58 percent agreed that the president 'tried to stop investigations into Russian influence on his administration'.

Forty percent said they thought Trump should be impeached, while 42 percent said he should not.

The poll responses were sharply split along party lines, with Democrats much more critical of Trump than his fellow Republicans.

Among those respondents who said they were familiar with the Mueller report, 70 percent said the report had not changed their view of Trump or Russia’s involvement in the US presidential race. Only 15 percent said they had learned something that changed their view of Trump or the Russia investigation, and a majority of those respondents said they were now more likely to believe that 'Trump or someone close to him broke the law'.

Poll found that after the release of Robert Mueller's report, 50 percent of Americans agreed that 'Trump or someone from his campaign worked with Russia to influence the 2016 election'

Speaker Nancy Pelosi vowed Friday Congress will not be silent, in response to the misconduct that was outlined in the report by Trump and his top aides, and insisted lawmakers will have a say on the obstruction charges.

Pelosi also got in a jab at Barr, claiming his conclusion the president 'did not obstruct justice' was 'directly undercut' by Mueller's report.

'In his summary letter and press conference, Attorney General Barr presented a conclusion that the President did not obstruct justice. The Mueller report appears to directly undercut that claim,' the speaker wrote.

She will convene her Democrats lawmakers on a Monday conference call to plot next steps, giving them time to read the 448-page report over the long Easter holiday weekend.

'The Caucus is scheduling a conference call for Monday to discuss this grave matter, which is as soon as our analysis and this Holy Season’s religious traditions allow,' she told them.

Speaker Nancy Pelosi insisted lawmakers will have a say on the obstruction charges against President Donald Trump after the special counsel kicked the issue to the legislative branch

Pelosi's challenge in the weeks ahead will be to manage Democrats who are calling for Trump's impeachment with those who want to take a more deliberative approach.

The first step of the congressional investigative process have started.

House Judiciary Chairman Jerry Nadler announced Friday morning he was subpoenaing the full Mueller report 'in the next couple of hours.'

'We need the entire report unredacted and the underlying documents in order to make informed decisions,' he told ABC's 'Good Morning America.' 'We will subpoena that entire report today.'

He said his subpoena will be the special counsel's full findings, including grand jury evidence, which Barr said he would with hold.

'Including the grand jury evidence, yes. Because we have to see the entire report. By the way, in every previous instance, Congress has seen all the evidence,' Nadler said.

Democratic reaction to Mueller's findings have already poured in with liberal lawmakers like Reps. Alexandria Ocasio-Cortez and Ilhan Omar saying it was time to consider impeachment proceedings against the president.

Rep. Jerry Nadler is subpoenaing the full Robert Mueller report he said on Friday

‘Mueller's report is clear in pointing to Congress' responsibility in investigating obstruction of justice by the President,’ Ocasio-Cortez tweeted on Thursday. ‘It is our job as outlined in Article 1, Sec 2, Clause 5 of the US Constitution.’

The 29-year-old then promised to sign on to impeachment proceedings launched by fellow freshman representative Rashida Tlaib.

‘While I understand the political reality of the Senate + election considerations, upon reading this DoJ report, which explicitly names Congress in determining obstruction,’ she added. ‘I cannot see a reason for us to abdicate from our constitutionally mandated responsibility to investigate.’

The Democrat from New York went on to stress that she doesn’t enjoy discussions of impeachment, either in office or on the campaign trail, and would prefer to focus her efforts on her Green New Deal or in achieving ‘Medicare for all’.

But, she said the current situation at hand puts impeachment ‘on our doorstep’, and as such it’s an avenue that should be at the very least considered, if not fully explored.

On Thursday, Democratic congressional freshman Alexandria Ocasio-Cortez (left) said that she would support an impeachment order against President Trump. Her declaration was followed by Ilhan Omar (right), who said Congress has a 'constitutional responsibility' to act

AOC aired her support of impeachment in a series of tweets on Thursday evening

Omar echoed her sentiments, asserting that Congress has a 'constitutional responsibility' to investigate whether Trump has committed any impeachable offenses.

She tweeted that such violations include: 'Obstruction of justice, violating the Emoluments Clause, collusion, [and] abuse of power.'

Last month, however, Pelosi said that she didn’t support the idea of impeaching Trump.

‘I’m not for impeachment,’ Pelosi told the Washington Post.

‘Impeachment is so divisive to the country that unless there’s something so compelling and overwhelming and bipartisan, I don’t think we should go down that path, because it divides the country. And he’s just not worth it.’

The redacted 448-page document collated by Mueller determined that Trump’s campaign did not engage with criminal conspiracy with Russia to aid his presidential bid.

Fellow Democratic Rep. Ilhan Omar echoed AOC's sentiments, asserting that Congress has a 'constitutional responsibility' to investigate whether Trump has committed any impeachable offenses

But Barr decided not to press for obstruction of justice charges - a decision he claims the special counsel's office left up to him.

Democrats have latched on to the fact the report does not plainly vindicate the president of the charge.

'If we had confidence after a thorough investigation of the facts that the President clearly did not commit obstruction of justice, we would state so. Based on the facts and applicable legal standards, however, we are unable to reach that judgment,' the Mueller report states.

The special counsel report also points out Congress can still prosecute Trump for obstruction.

‘The conclusion that Congress may apply the obstruction laws to the President's corrupt exercise of the powers of office accords with our constitutional system of checks and balances and the principle that no person is above the law,’ Mueller writes.