Politico reports that Canada spent a decade studying how to push back on Donald Trump and, in 2026, timed retaliatory tariffs to hit goods that would maximize economic pain across the U.S. midterm map, with Prime Minister Mark Carney walking away from trade talks hours before an August 2026 deadline. The piece also follows Michigan's Trade Smart Alliance, built by Republican John Sellek and Democrat Mark Fisk, whose polling and ads helped push Republicans like Senate nominee Mike Rogers to break with Trump's tariffs.