Washington (CNN) Donald Trump's personal attorney Rudy Giuliani, whose dealings with Ukraine are a key facet of the impeachment case, has been lobbying the President to join his legal team on the Senate floor during his upcoming trial.

Giuliani has pressed Trump to make him part of the team of lawyers who will argue the case against his removal from office on the Senate floor, a White House official and two sources close to the President told CNN. Giuliani has argued that he knows the case against the President inside-out.

The White House declined to comment.

Giuliani has publicly signaled his interest in getting involved in the case, telling reporters while he was at the President's Mar-a-Lago estate on New Year's eve: "I would love to try the case."

HuffPost first reported that Giuliani is lobbying Trump to join the team.

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