Facing skyrocketing lumber prices at home, US importers are driving competition for European wood, and winning.  The frenzy comes on the heels of record American forest-products imports from Europe in 2020, when North American demand soared and caught sawmills off guard with low inventories. Lumber prices have reached new peaks on a near daily basis in recent weeks, quadrupling from just a year ago. The unprecedented rally has been spurred by low borrowing rates, an increased appetite for larger homes, and a frenzy of do-it-yourself renovations during the pandemic.  Unrelenting building demand means ...