The Globe and Mail reports in its Wednesday edition that Canada is taking its lumber fight against the United States to one of the most contentious elements of NAFTA -- Chapter 19, which sets up trade panels to settle disputes. A triple-bylined item led by Brent Jang says that Ottawa filed its request on Tuesday for a binational panel under the North American free-trade agreement to strike down the punitive U.S. tariffs on Canadian softwood. The move comes as Canada takes an increasingly hardball approach to NAFTA renegotiations and just one day before talks resume in Mexico City. Chapter 19 is one of the key sticking points in NAFTA talks: The Trump administration wants to abolish the panels while Canada has vowed never to give them up. Canada has previously emerged victorious when appealing its case through NAFTA in the long-running lumber battle. "We are enclosing a Request for Panel Review pursuant to Rule 34 of the NAFTA Rules of Procedure for Article 1904 Binational Panel Reviews," according to the letter submitted on Tuesday to Paul Morris, U.S. Secretary of the U.S. section of the NAFTA Secretariat. Ottawa plans, at least for now, to give no ground on the White House's core protectionist demands.