Canada's prime minister on Friday named seasoned politician Frank McKenna as Canada's new ambassador to Washington, a move designed to enhance relations between the prickly North American neighbors. McKenna, 46, said his job would be to sell his country to Americans, long perceived by Canadians as indifferent to the people and problems north of the 49th parallel. "I think Canada has something distinctive to sell to the world," McKenna told reporters in Ottawa, shortly after his appointment was made official. "A large part of that world is the United States of America, and I would like the United States to understand us better." McKenna was premier of New Brunswick from 1987 to 1997 and for the last seven years practiced law and served on the boards of General Motors of Canada Ltd., the Bank of Montreal and CanWest Global Communications Corp., where he is chairman.