toronto former canadian prime minister brian mulroney sunday criticize donald trump potential plan scrap north american free trade agreement nafta say u.s. presidential candidate likely lose nov. election speak ctv question period politics talk show mulroney 1980s sign canada-u.s. free trade deal say scrap nafta hurt unite state millions millions job unite state depend directly upon trade canada mexico mulroney say tear mother use say cut nose spite face republican presidential nominee trump rail nafta trade deal canada mexico u.s. job killer say elect would prepare scrap could negotiate much good term unite state north american free trade agreement take effect 1994 administration president bill clinton husband democratic presidential candidate hillary clinton trump also hardline immigration plan emphasize deport illegal immigrants commit crimes proposals include build wall border mexico mulroney say trump rhetoric carry republican primaries think something negative carry white house trump campaign team immediately respond request comment former canadian pm rebuke trump nafta predict defeat