The step is the latest against Giuliani for his role in Trump’s debunked claims that the 2020 presidential election was fraudulent.
Last June, an appeals court suspended him from practicing law in New York because he made false statements while trying to get courts to overturn Trump's loss. An attorney disciplinary committee had asked the court to suspend his license on the grounds that he had violated professional conduct rules as he promoted theories that the election was stolen through fraud.
The D.C. Bar temporarily suspended him last July although the practical implication of that action is questionable, given that Giuliani's law license in Washington has been inactive since 2002.
News of the counsel's action follows the first public hearing by the House committee investigating the Capitol riot on Jan. 6, 2021. Giuliani met for hours with the committee last month.