On his first trip to another country as President, Barack Obama is spending a few hours in Canada, America’s biggest trading partner. He’ll hold a news conference with Prime Minister Stephen Harper, but he won’t address Parliament or the Canadian public. Canadians are sorry he’s not staying longer, because there’s a lot to talk about, starting with that “Buy American” provision in the stimulus package. Presidential candidate Obama talked about re-visiting NAFTA, and Canadians are worried about protectionism. As President, Obama is focused on the move to pull Canadian troops out of Afghanistan, and the environmental effects of extracting oil from Canadian shale. We hear about those issues from the US and Canadian points of view.