Buick finally had cars Americans wanted to buy - then came tariffs

General Motors’ (GM.N), opens new tab Buick was on a roll. Sales for the once-stodgy brand were up 39% in the first quarter with a refreshed lineup of compact SUVs including the Envision, Encore GX, and the Envista, its top-selling SUV for under $30,000. Then President Trump’s tariffs hit. Sign…