A.M. Edition for Jan. 10. As investigators look for the cause of deadly wildfires around Los Angeles, regulatory filings show one of city’s municipal utilities didn’t proactively shut off power in areas ravaged by blazes – a practice turned to by other utilities when fire risk is high. Plus, what to expect as the TikTok ban heads to the Supreme Court. And WSJ reporter José de Córdoba explains how the prospect of U.S. military strikes on Mexican drug cartels in Donald Trump’s second term are rattling the country’s political circles. Luke Vargas hosts.

Sign up for the WSJ’s free What’s News newsletter.

Learn more about your ad choices. Visit megaphone.fm/adchoices