Original sentence: A photo-op at a technology firm meant to illustrate a "brain drain" to the US was undermined when the owner reported that he had moved to Canada from the United States eight years earlier.Day was widely criticized for two campaign appearances during the first week in which he was perceived to have stumbled.The next day, at Niagara Falls, Day remarked that Canadian jobs were flowing south "just like the Niagara River", when in fact the river flows north