House Democrats pushed through a $50 billion bill for the Iraq war Wednesday night that would require President Bush to start bringing troops home in coming weeks with a goal of ending combat by December 2008. The legislation, passed 218-203, was largely a symbolic jab at Bush, who already has begun reducing force levels but opposes a congressionally mandated timetable on the war. And while the measure was unlikely to pass in the Senate–let alone overcome a presidential veto–Democrats said they wanted voters to know they weren’t giving up.