I'm Davan Maharaj, editor of the Los Angeles Times. Republicans help Obama save his legacy trade legislation; Uber toughs it out in China; and Hollywood loses a stellar composer. Here are some story lines I don't want you to miss today. TOP STORIES Trading Up It's a strange day when Republicans conspire to help President Obama seal part of his legacy. That's what happened in the Senate, which voted -- against a Democratic headwind -- to grant him powers to negotiate a sweeping trans-Pacific trade deal. Opponents worry it will leave U.