Tariff talk returns to markets

People around the world are using AI more than Americans, a new poll finds. About 40% of adults in the U.S. told pollsters that they used generative AI in the last year. In Nigeria, the United Arab Emirates, and India, that number was about 85%. What's driving the divide? But first: a preview of markets before President Donald Trump's speech at Davos, and a look at the struggle between the Trump administration and the Fed.