"Previously on the West Wing" spoken by Leo While the White House is festooned with Christmas finery, Leo (John Spencer) fears the worst when he testifies in the Congressional investigation into the President's (Martin Sheen) possibly criminal lack of public disclosure about his illness while flashbacks reveal the background of Leo convincing him to run and also a moment of weakness in Leo's past involving alchohol. When Cliff Calley (Mark Feuerstein) discovers that an unscrupulous commitee member wants to make Leo's relapse public for sleazy political gains, he manages to spare Leo the embarassment.