Rep. Jamie Raskin (D-Md.) launched a challenge to top House Judiciary Democrat Jerry Nadler (D-N.Y.) on Monday afternoon in a letter to Democratic colleagues.

The bid sets up a generational clash for the leadership of one of the most high profile congressional panels as Democrats look to build a bulwark against Donald Trump’s presidency.

“After a week consulting most of our Colleagues and engaging in serious introspection about where we are, I am running today to be your Ranking Member on the House Judiciary Committee in the 119th Congress,” Raskin wrote. “This is where we will wage our front-line defense of the freedoms and rights of the people, the integrity of the Department of Justice and the FBI, and the security of our most precious birthright possessions: the Constitution and the Bill of Rights, the rule of law, and democracy itself.”