Who is Congressman Alan Moran from Deep Six and what is their importance?

Speaker of the House, Alan Moran, acts as one of the President's strongest opponents in his desire to send aid to Russia. Moran accepts the President's invitation to debate the subject on the yacht, and like the other Americans present at the meeting, he is kidnapped. Dirk Pitt rescues Moran before he can be transported to Russia. Back in the states, Moran works to impeach the President because of the Soviet brainwashing.