Obama says Republicans holding recovery hostage By Caren Bohan and Alister Bull WASHINGTON | Fri Sep 10, 2010 5:07pm EDT WASHINGTON (Reuters) - President Barack Obama accused Republicans on Friday of holding the middle class hostage and defended his efforts to stimulate the sluggish economy as he tries to reverse grim election prospects for his fellow Democrats in November. With opinion polls showing more Americans questioning his economic leadership, Obama used a rare news conference at the White House to hammer home a campaign-style message painting Republicans as obstructionist and the party for the rich. Obama has been on the...