September 2019 - Canada hosted the North American Leaders. Summit on June 29, 2016. At the time, President Obama, Prime Minister Trudeau and President Enrique Pena Neito discussed issues including climate change, clean energies, the environment, competitiveness at the borders, and trade security and defense, and regional and global issues. The arrival of President Trump in the Oval Office would subsequently make tri-lateral progress on these issues difficult.
September 29, 2019 - "This is my fourth North American Leaders’ Summit, and the first that Canada is hosting in nearly a decade. And this reflects the new commitment that Prime Minister Trudeau has brought to our shared vision of a strong and integrated North America. So thank you so much, Justin." - North American Leaders’ Summit - US Embassy and Consulates in Canada
May 3, 2016 - "U.S. President Barack Obama will attend a Three Amigos leaders summit in Ottawa and address a joint session of Parliament on June 29, the White House confirmed Wednesday. Obama had promised to visit Canada during Prime Minister Justin Trudeau's trip to Washington in March for a state dinner, and now Mexican President Enrique Pena Nieto is also expected to be in Ottawa for the summit that will immediately precede Obama's address. Gov. Gen. David Johnston will host Nieto at an official state dinner, which will be followed by an event in his honour at the National Art Gallery. The Governor General's office confirmed the dates for Nieto's visit, June 27 to 29, in a statement Wednesday." - Barack Obama to address Canadian Parliament June 29 - CBC