Barack Obama, Justin Trudeau

President Barack Obama and Canadian Prime Minister Justin Trudeau walks through the colonnade to speak at a bilateral news conference in the Rose Garden of the White House in Washington, Thursday, March 10, 2016. (AP Photo/Andrew Harnik)

President Barack Obama and Canadian Prime Minister Justin Trudeau walks through the colonnade to speak at a bilateral news conference in the Rose Garden of the White House in Washington, Thursday, March 10, 2016. (AP Photo/Andrew Harnik)