We are on the precipice of the third presidential impeachment in United States history. No US president, however, has ever been removed from office. Will President Trump be the first? What impact will impeachment have on US policymaking? What are the lessons from past impeachments? How will impeachment affect US foreign policy in 2020 and what can US allies expect from the United States heading into next year's election? At this event, “Impeachment: The insider’s guide”, a compilation of analysis by US Studies Centre experts was launched. Panellists for the discussion included Professor Simon Jackman, Dr Charles Edel, Dr Gorana Grgic and Bruce Wolpe.