The Sunday before Christmas marked the busiest travel day of the holiday season, as millions of Americans packed airports, train stations and the roads. Elise Preston reports. U.S. Steel workers are divided over the possible sale of the company to Japanese manufacturer Nippon Steel. President Biden and President-elect Donald Trump have both voiced opposition to the deal, and Mr. Biden may signal an official stance on trying to block the deal as early as Monday. Erica Brown reports. A suspect is in custody after a woman was killed after being set on fire inside a New York City subway car on Sunday. Tammy Mutasa has the latest. Many Syrians who have been living abroad, some for decades, are returning home after the fall of the Assad regime. But there remain mixed feelings of hope and trepidation for some. Imtiaz Tyab reports.