As Canada’s trade deal with the US and Mexico faces a crucial review, many US industries are urging the Trump administration to preserve the agreement and to stop putting tariffs on imports from its northern and southern neighbours. Ahead of the public hearings scheduled this week, some of the heaviest hitters in the U.S. manufacturing, industrial and retail sectors have submitted briefs extolling the agreement’s benefits to the domestic economy. …CUSMA is “the most pro-US manufacturing trade agreement in history,” said the National Association of Manufacturers, the largest organization in a sector that contributes $2.9 trillion US to the nation’s GDP. …The National Association of Home Builders calls on the Trump administration to scrap all tariffs on building material imported from Canada and Mexico, including Canadian softwood lumber, which it says “fills a unique niche in residential construction that is not easily replaced with domestic sources.”