Peter Lillianfield is a Republican congressman who attempted to obtain records of an internal White House investigation into drug use by White House staffers. Ultimately, this was just a ploy to reveal information he had uncovered about Leo. As this information had been obtained illegally, it could not be released directly without severe legal repercussions. Lillianfield therefore passed the information on to Larry Claypool of Freedom Watch, who then filed lawsuits under the Freedom of Information Act (FOIA) regarding drug use in the White House with the goal of forcing someone to admit to Leo's past. To this end, he deposed Josh Lyman on more than one occasion.