Taoiseach Micheál Martin and other political leaders are continuing their visits to the United States for St Patrick's week.
In Washington, the main emphasis of the programme will be on business and economic links between the two countries.
The Taoiseach and Minister for Transport Eamon Ryan will continue their meetings with senior US congressional figures, and Mr Martin will present Science Foundation Ireland awards to John and Patrick Collison, the founders of financial services firm Stripe at a US Chamber of Commerce event.
Sinn Féin leader Mary Lou McDonald, and Michelle O'Neill, are also meeting the Congressional Friends of Ireland group on Capitol Hill.
Tonight the main event is the 30th anniversary of the Ireland Funds Gala, at which President Joe Biden is expected to make an appearance.
