The third day of Brett Kavanaugh’s Supreme Court confirmation hearing began with fireworks: A senator dared another to try to kick him out of the Senate.

Potential 2020 Democratic presidential candidate Cory Booker of New Jersey and Senate Majority Whip John Cornyn of Texas jousted at the Thursday session’s start over the process by which the Judiciary Committee, National Archives, Justice Department and former President George W. Bush’s legal staff have been reviewing and clearing or withholding documents from Kavanaugh’s time working for the 43rd president.

[‘No One is Above the Law,’ Kavanaugh Tells Senators]

Booker announced he had ordered his staff to release an email before it has gone through that process, saying he was knowingly violating a Senate rule that could lead to his removal from the chamber.

“I knowingly violated the rules that were put forth,” Booker said, calling his move an act of “civil disobedience.”