(CNN) House Judiciary Chairman Jerry Nadler, a New York Democrat, has hired two legal consultants who have advocated for the impeachment or possible indictment of President Donald Trump for obstructing justice.

The House Judiciary Committee announced Tuesday it was hiring former Obama administration lawyer and ethics watchdog Norm Eisen and high-powered criminal defense attorney Barry Berke as special oversight counsels for the committee, where they will help craft the panel's plans to investigate the President and his administration.

The pair will be tasked with helping the Democratic-led committee with oversight of the Justice Department — including the review of special counsel Robert Mueller's investigation — as well as other oversight matters in the committee's jurisdiction.

The new hires are the latest sign of House Democrats ramping up to probe every part of Trump's life, from his personal finances to his businesses to his 2016 presidential campaign. They also signal that Nadler is thinking about the possibility his committee could pursue impeachment proceedings against the President, even if he hasn't decided to take that step yet.

"Congress has a constitutional duty to be a check and balance against abuses of power when necessary. Before anything else, however, we have to follow the facts and conduct the sort of oversight that has been completely absent over the last two years," Nadler said in a statement announcing the hires.

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