Slideshow: The North American Leaders' Summit in pictures

The sea of press gathered to cover the 'Three Amigos Summit' in Ottawa on June 29. (The Hill Times Photograph by Sam Garcia)

Prime Minister Justin Trudeau, Mexican President Enrique Peña Nieto and U.S. President Barack Obama take a moment to look out over Parliament Hill while preparing to take photos. (The Hill Times Photograph by Jake Wright)

Prime Minister Justin Trudeau and U.S. President Barack Obama stare out over Parliament Hill. (The Hill Times Photograph by Jake Wright)

The most awkward handshake ever? Prime Minister Trudeau, President Peña, and President Obama share a good laugh after a jumbled attempt at a three-way handshake. (The Hill Times Photograph by Jake Wright)

The most awkward handshake ever? Prime Minister Trudeau, President Peña, and President Obama share a good laugh after a jumbled attempt at a three-way handshake. (The Hill Times Photograph by Jake Wright)

The most awkward handshake ever? Prime Minister Trudeau, President Peña, and President Obama share a good laugh after a jumbled attempt at a three-way handshake. (The Hill Times Photograph by Jake Wright)

Prime Minister Justin Trudeau, President Peña, and President Obama smile and chat while taking photos overlooking the Parliament buildings. (The Hill Times Photograph by Jake Wright)

The three North American leaders walk down the great hall at the National Gallery of Canada. (The Hill Times Photograph by Jake Wright)

The three North American leaders walk down the great hall at the National Gallery of Canada. (The Hill Times Photograph by Jake Wright)

President Obama prepares to speak at the National Gallery of Canada. (The Hill Times Photograph by Sam Garcia)

U.S. Secretary of State John Kerry at the press conference. (The Hill Times Photograph by Sam Garcia)

Environment Minister Catherine McKenna attends the North American Leaders' Summit press conference at the National Gallery of Canada (The Hill Times Photograph by Sam Garcia)

Minister of Small Business and Tourism Bardish Chagger and Jim Carr, minister of Natural Resources, chat at the National Gallery of Canada. (The Hill Times Photograph by Sam Garcia)

The leaders answering questions and speaking to members of the press and other attendees at the National Gallery of Canada. (The Hill Times Photograph by Sam Garcia)

Can you caption this photo? President Obama makes a humourous gesture while speaking. (The Hill Times Photograph by Sam Garcia)

Prime Minister Justin Trudeau at the National Gallery of Canada (The Hill Times Photograph by Sam Garcia)

Prime Minister Justin Trudeau, looking amused while President Obama speaks. (The Hill Times Photograph by Sam Garcia)

President Obama gesturing while speaking at the National Gallery of Canada. (The Hill Times Photograph by Sam Garcia)

The leaders chat in between events at the National Gallery of Canada. (The Hill Times Photograph by Sam Garcia)

President Obama and Prime Minister Justin Trudeau walk down the hall for President Obama's official welcome on Parliament Hill. (The Hill Times Photograph by Sam Garcia)

President Obama and Prime Minister Justin Trudeau walk down the hall for President Obama's official welcome on Parliament Hill. (The Hill Times Photograph by Sam Garcia)

NDP MP Niki Ashton takes a selfie while Speaker of the House of Commons Geoff Regan (right), and the Usher of the Black Rod, John Gregory Peters (left) stand by. (The Hill Times Photograph by Sam Garcia)

President Obama signs the distinguished visitors books of the Senate and of the House of Commons on Parliament Hill, with Prime Minsiter Justin Trudeau, his wife Sophie Grégoire Trudeau, Speaker of the House of Commons Geoff Regan (left) and Speaker of the Senate Sen. George J. Furey (right) looking on. (The Hill Times Photograph by Sam Garcia)

President Obama signs the distinguished visitors books of the Senate and of the House of Commons on Parliament Hill, with Prime Minsiter Justin Trudeau, his wife Sophie Grégoire Trudeau, Speaker of the House of Commons Geoff Regan (left) and Speaker of the Senate Sen. George J. Furey (right) looking on. (The Hill Times Photograph by Sam Garcia)

President Obama's signature in the book for distinguished visitors (The Hill Times Photograph by Sam Garcia)

President Obama and Prime Minister Justin Trudeau shake hands during the official welcome to Parliament Hill. (The Hill Times Photograph by Sam Garcia)

President Obama in Ottawa for the North American Leaders' Summit. (The Hill Times Photograph by Sam Garcia)