Rep. Rashida Tlaib Rashida Harbi TlaibTrump attacks Omar for criticizing US: 'How did you do where you came from?' George Conway: 'Trump is like a practical joke that got out of hand' Pelosi endorses Kennedy in Massachusetts Senate primary challenge MORE's reelection campaign has begun selling "impeach the mf" T-shirts after House Speaker Nancy Pelosi Nancy PelosiDemocratic senator to party: 'A little message discipline wouldn't kill us' Overnight Health Care: New wave of COVID-19 cases builds in US | Florida to lift all coronavirus restrictions on restaurants, bars | Trump stirs questions with 0 drug coupon plan Overnight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds MORE (D-Calif.) announced a formal impeachment inquiry into President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE.

The Michigan Democrat made headlines earlier this year when she said "We’re going to go in and impeach the mothef---er” hours after she was sworn into office.

"Lean in with me to hold this lawless President accountable. Together, we will fight back and protect our democracy," Tlaib tweeted Thursday.

"Our country depends on it!...and yes you can even wear what you feel," she added.

Lean in with me to hold this lawless President accountable. Together, we will fight back and protect our democracy.



Our country depends on it!



...and yes you can even wear what you feel https://t.co/8C3BUfp1kf pic.twitter.com/QwBADidAHo — Rashida Tlaib (@RashidaTlaib) September 26, 2019

Purchasers of the $29 shirt have the choice between black and white or red, white and blue designs.

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Pelosi this week announced the formal impeachment probe after revelations Trump had pressed Ukrainian President Volodymyr Zelensky to investigate 2020 Democratic presidential candidate and former Vice President Joe Biden Joe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE.

Trump has denied any wrongdoing on his call with Zelensky.

Tlaib, a vocal critic of Trump, has been a staunch supporter of impeachment before the Ukraine news and in March unveiled a resolution calling for an impeachment probe.