A federal judge seen as a possible future U.S. Supreme Court pick by President Joe Biden cleared a key hurdle on Thursday in her nomination to an influential appellate court, winning approval in a Senate committee despite Republican opposition. The Democratic-led Senate Judiciary Committee advanced Washington-based U.S. District Judge Ketanji Brown Jackson's nomination to the U.S. Court of Appeals for the District of Columbia Circuit on a 13-9 vote. Biden has promised to name a black woman - an historic first - to the Supreme Court if a vacancy arises, and Jackson is widely seen as a potential pick down...