Testimony by White House consumer adviser Elizabeth Warren before a House subcommittee broke down into acrimony when the panel’s Republican chairman accused her of lying about the terms of her appearance.

Warren testified yesterday before a House of Representatives Oversight and Government Reform panel about her efforts to set up the new Consumer Financial Protection Bureau, an agency Republicans and Wall Street do not like and want to gut.

The hearing focused on disputes over the scope of the agency’s power, but her appearance ended in heated wrangling over how long she would testify.

About an hour into the hearing Republicans sought to temporarily adjourn for votes. Warren objected to sticking around for more questions, saying her afternoon was packed with meetings and that the committee had agreed she would only stay an hour.