OTTAWA — Eight years after Canada launched free trade negotiations with the Mercosur bloc of nations, a Brazilian official says an agreement is on track to be signed by the end of the year. Paula Barboza, director for extra-regional negotiations and economic governance at Brazil's ministry of foreign affairs, told The Canadian Press the talks have been propelled by a "political push" as Canada and other nations work to diversify their trade. "I think we both have these negotiations as a priority for our governments and we are keen to close them as quick as possible," she said in an...