On Monday, major U.S. stock indices declined nearly 2% following President Donald Trump’s announcement that tariffs on Mexico, China and Canada would go into effect on Tuesday. The S&P 500 fell 1.8%, and the Nasdaq Composite fell 3.6%. Shares of tech giant Nvidia fell 8.7%, and those of Tesla fell 3%, nearly 40% off highs following the November 2024 election. By Tuesday morning, indices continued their fall, with many erasing gains made since the post-election rally. The U.S. imposed a 25%...