General Motors, joining the list of impacted automakers, said on Thursday it was forced to cancel two production shifts at a plant in Michigan
Protesters have also closed another important US Canada border crossing in Coutts, Alberta
Trump said details on the move would be announced later but that it would not affect trade between the two countries
NEW YORK (Reuters) - The S&P 500 ended flat while the Dow edged down and the Nasdaq closed higher in light trading on Friday as Canada and the United States concluded trade talks without resolution ahead of the Labor Day weekend.
Canadian officials were hesitant to point to a trend based on the preliminary data