Vowing to find new ways to stimulate the sputtering economy, President Obama will call for long-term investments in the nation's infrastructure that would cost at least $50 billion, administration officials say.
As the primary season draws to a close and the fall campaign dawns, a weak economy and voter angst add up to enough competitive races to give Republicans at least a chance of winning Senate control, but Democrats are loathe to concede their majority is at risk.