John Kerry, Justin Trudeau

Secretary of State John Kerry shakes hands with Canadian Prime Minister Justin Trudeau during a luncheon meeting at the State Department in Washington, Thursday, March 10, 2016. (AP Photo/Manuel Balce Ceneta)

Secretary of State John Kerry shakes hands with Canadian Prime Minister Justin Trudeau during a luncheon meeting at the State Department in Washington, Thursday, March 10, 2016. (AP Photo/Manuel Balce Ceneta)