In photos: The Obamas welcome the Trudeaus to a state dinner at the White House
President Barack Obama and first lady Michelle Obama greet Canadian Prime Minister Justin Trudeau and Sophie Grégoire-Trudeau at the North Portico of the White House.J. Scott Applewhite/The Associated Press
US President Barack Obama (R), Canadian Prime Minister Justin Trudeau (2nd R) and their wives Michelle Obama (2nd L) and Sophie Grégoire-Trudeau (L) pose for a photo before the State Dinner.Nicholas Kamm/AFP / Getty Images
President Barack Obama and first lady Michelle Obama walk out to greet Canadian Prime Minister Justin Trudeau and Sophie Grégoire-Trudeau at the North Portico of the White House.Pablo Martinez Monsivais/The Associated Press
Canadian Prime Minister Justin Trudeau and his wife Sophie Grégoire-Trudeau arrive for the state dinner at the White House March.Alex Wong/Getty Images
President Barack Obama and first lady Michelle Obama greet Canadian Prime Minister Justin Trudeau and Sophie Grégoire-Trudeau.Jacquelyn Martin/The Associated Press
Actress Sandra Oh and Lev Rukhin arrive for the State Dinner.Andrew Harnik/The Associated Press
Actor Ryan Reynolds and entertainer Blake Lively, arrive for the State Dinner.Andrew Harnik/The Associated Press
Actor Mike Myers and his wife Kelly arrive for the State Dinner.Andrew Harnik/The Associated Press
Actor Michael J. Fox and his wife Tracy Pollan arrive for the State Dinner.Andrew Harnik/The Associated Press
Lorne Michaels, Executive Producer, Saturday Night Live, and Alice Michaels arrive at the State Dinner.Chris Kleponis/AFP / Getty Images
US President Barack Obama (C) speaks between Canadian Prime Minister Justin Trudeau and his wife Sophie Grégoire-Trudeau during the State dinner.Brendan Smialowski/AFP / Getty Images
US President Barack Obama (C), Canadian Prime Minister Justin Trudeau and his wife Sophie Grégoire-Trudeau raise glasses during the State dinner.Brendan Smialowski/AFP / Getty Images
US President Barack Obama toasts with Canadian Prime Minister Justin Trudeau.Brendan Smialowski/AFP / Getty Images
Canadian Prime Minister Justin Trudeau, right, toasts President Barack Obama.Jacquelyn Martin/The Associated Press
Canadian Prime Minister Justin Trudeau (L) takes a drink while US President Barack Obama and Sophie Grégoire-Trudeau toast.Brendan Smialowski/AFP / Getty Images