A liberal congresswoman who boasted in a foul-mouthed itrade that the new Democratic House leadership will impeach 'motherf***er' Donald Trump doubled down Friday morning on Twitter, refusing to apologize .

'I will always speak truth to power. #unapologeticallyMe,' Michigan Rep. Rashida Tlaib tweeted a day after taking her seat in Congress.

'This is not just about Donald Trump,' she claimed. 'This is about all of us. In the face of this constitutional crisis, we must rise.' She didn't specify what constitutional crisis she was reacting to.

Republican House Minority Leader Kevin McCarthy blasted her on Friday, and slapped at House Speaker Nancy Pelosi for not publicly disavowing the slur.

'Are the House majority going to be serious about anything?' he asked reporters.

Pelosi had told an MSNBC audience minutes earlier that she was 'not in the censorship business,' claiming Tlaib's words were no worse than President Trump's typical vernacular

Tlaib is the first Palestinian-American woman in Congress, and dropped her F-bomb at the president during a party Thursday night hosted by the liberal group MoveOn.

Speaking in a dimly lit room, Tlaib told a cheering crowd that she had told one of her young sons: 'We're going to impeach the motherf***er!'

Rashida Tlaib told supporters that 'we're going to impeach the motherf***er' about President Trump as she celebrated becoming the first Palestinian-American woman in Congress

Newly minted House Speaker Nancy Pelosi said Friday that she's 'not in the censorship business,' implying that she's okay with Tlaib's language

House Minority Leader Kevin McCarthy demanded minutes later that someone in the Houe Democratic Caucus 'stand up to' Pelosi for the sake of decorum

Rep. Rashida Tlaib smiled Friday following a group photo with the women in the House of Representatives on Capitol Hill

Tlaib doubled down on Friday, refusing to apologize and citing a non-specific 'constitutional crisis' in claiming: 'we must rise'

Pelosi found herself on the spot Friday morning but insisted she wouldn't intervene with Tlaib despite calling talk of impeachment 'divisive.'

'I probably have a generational reaction to it," she said, adding: 'I'm not in the censorship business. I don't like that language, I wouldn't use that language, but I wouldn't establish language standards for my colleagues.'

Pelosi also claimed calling Trump a 'motherf***er' was 'nothing worse than the president has said.'

'I don’t think we should make a big deal of it,' she declared.

McCarthy, usually calm and unflappable, was visibly agitated as he spoke with journalists on Capitol Hill.

'How do you work with anybody if this is what they really have planned? That they go down into a place, they have the MoveOn, they think others aren't watching it, they're using foul language. They introduce that they just want to impeach the president. Over what basis? We have government shutdown right now. Where are their priorities?' he asked.

'We watched a brand new speaker say nothing to her. ... That action should not stand,' McCarthy vented.

'Somebody should stand up to her. She's the speaker. That individual sits in her caucus. I would hope if she wouldn't, others in her caucus would.'

Tlaib's spokesperson said Friday that she 'was elected to shake up Washington, not continue the status quo. Donald Trump is completely unfit to serve as President. The Congresswoman absolutely believes he needs to be impeached. She ran and won by making this very clear to the voters in her district.'

Tlaib, who represents Michigan's 13th district, had already published an op-ed in the Detroit Free Press calling on Democrats to start impeachment proceedings against Trump on day one

Tlaib made her foul-mouthed remark while recalling a conversation she had with her son after winning her election.

'People love you, and you win,' she told the crowd.

'And when your son looks at you and says: "Mumma, look, you won, bullies don't win".'

'And I said: "Baby they don't, because we're going to go in there and impeach the motherf***er".'

Tlaib had penned an op-ed for the Detroit Free Press alongside John Bonifaz, a constitutional lawyer and founder of the 'Impeach Donald Trump Now' campaign, in which the pair issued the same demand.

'President Donald Trump is a direct and serious threat to our country,' they wrote.

'On an almost daily basis, he attacks our Constitution, our democracy, the rule of law and the people who are in this country. His conduct has created a constitutional crisis that we must confront now.'

Tlaib spoke out as Democrats pledged to tackle Trump head-on after taking back control of the House of Representatives at the start of the New Year

Democrat Brad Sherman, of California, has already introduced articles of impeachment against Trump, the same stunt he performed in 2017

The pair also dismiss the idea of waiting for Robert Mueller to finish his investigation before beginning impeachment proceedings, and say it would be a betrayal of the American people to wait until the 2020 election to unseat him.

'This is not just about Donald Trump. This is about all of us. What should we be as a nation? Who should we be as a people?,' they said.

'In the face of this constitutional crisis, we must rise. We must rise to defend our Constitution, to defend our democracy, and to defend that bedrock principle that no one is above the law, not even the President of the United States.

'Each passing day brings more pain for the people most directly hurt by this president, and these are days we simply cannot get back. The time for impeachment proceedings is now.'

Her fiery remarks came as fellow California Democrat Rep. Brad Sherman used his first day in office to file an impeachment resolution against Trump.

Sherman introduced an identical bill in 2017, charging that Trump obstructed justice when he fired FBI Director James Comey just months after moving into the White House.

The resolution accuses Trump of 'threatening, and then terminating' Comey because he knew the FBI was investigating then-National Security Advisor Michael Flynn and 'conducting one or more investigations into Russian state interference in the 2016 campaign.'

Meanwhile Nancy Pelosi stepped up pressure on Trump as the House passing a spending bill which would reopen the government, but without $5.6billion in funding for his wall

Sherman told the Los Angeles Times that 'there is no reason' Congress shouldn't consider impeachment: 'Every day, Donald Trump shows that leaving the White House would be good for our country.'

Ohio Republican Rep. Jim Jordan confirmed that Sherman had filed his bill, tweeting: 'We knew they couldn’t help themselves. Rep. Sherman files articles of impeachment on the President. Dems are more focused on stopping Trump than building the Wall and helping the country.'

Newly installed House Speaker Nancy Pelosi told the 'TODAY' show this week that she doesn't want to see an impeachment 'for political reasons,' but cautioned that politics also won't prevent her from calling a vote if it's justified.

A Politico/Morning Consult poll in November found that just 33 per cent of voters want Trump impeached. But 61 per cent of Democrats are eager to see it in 2019.

A December Harvard CAPS/Harris poll found 39 per cent of voters want to see the president fired.

Pelosi also stepped up pressure on Trump after passing a spending bill that would end the government shutdown but without including $5.69 billion for his border wall.

She said Trump and Senate Republicans should 'take yes for an answer' and approve the border bill, which was virtually identical to a plan the Senate adopted on a voice vote last month.

Pelosi gave a speech bashing Trump as he made his first appearance in the media briefing room alongside border agents to argue that the wall needed to be built

Trump then posted a meme showing his face and the words 'The Wall is Coming'

'We're not doing a wall. Does anyone have any doubt that we're not doing a wall?' Pelosi told reporters at a news conference Thursday night.

Pelosi, who was elected speaker earlier Thursday, also took a shot a Trump, calling his proposal 'a wall between reality and his constituents.'

The Democratic package to end the shutdown includes a bill to temporarily fund the Department of Homeland Security at current levels - with $1.3 billion for border security, - through February 8 as bipartisan talks would continue.

It was approved 239-192.

The largely party-line votes came after Trump made a surprise appearance at the White House briefing room pledging to keep up the fight for the wall.

It was his first appearance behind the podium, that other presidents have used for press conferences, in the nearly two years since he took office.

Surrounded by border agents, including prolific Fox News guest Brandon Judd, he insisted his wall was necessary for national security.

'You can call it a barrier. You can call it whatever you want. But essentially, we need protection in our country,' Trump declared. 'We're going to make it good. The people of our country want it.'

He left after roughly ten minutes without taking questions from reporters, despite the White House billing it as a 'briefing' with Press Secretary Sarah Sanders.

Trump later posted a meme on Instagram showing his face and the words 'The Wall is Coming.'