HALIFAX, Nova Scotia — Canada-U.S. relations took centre stage at the federal cabinet retreat in Halifax. …Eight months ago Trudeau launched a renewed Team Canada approach, restoring the game plan initiated under the first Donald Trump presidency. …The tumultuous four years of Trump’s time in the White House was difficult for Canada, as he forced a renegotiation of the North American Free Trade Agreement and imposed punishing tariffs on Canadian steel and aluminum. …Canada is looking to shore up its interests ahead of him possibly winning again in November, but even if vice-president Kamala Harris prevails, irritants and U.S. protectionism remain in play. …Ongoing U.S. tariffs on Canadian softwood lumber remain a large point of disagreement between the two countries. Imposed in 2017, the tariffs remain in place despite multiple Canadian challenges, and earlier this month the Biden-Harris government moved to increase them.