"BAGHDAD, Iraq (AP) U.S. jets screamed low over the capital and helicopter gunships swooped in to pound a central Baghdad battleground Tuesday, supporting Iraqi and American troops in a daylong fight that officials said killed 50 insurgents in a militant Sunni Arab stronghold. The battle raged on Haifa Street about 1 1/2 miles north of the heavily fortified Green Zone home to the U.S. Embassy and other facilities on the eve of President Bushs expected announcement that he would send 20,000 more soldiers to Iraq despite growing opposition on Capitol Hill. It was the second major confrontation on Haifa Street in the four days since Iraqi Prime Minister Nouri al-Maliki announced a new drive to rid Baghdad of sectarian fighters. The U.S. military said about 1,000 Iraqi and U.S. soldiers carried out targeted raids to capture multiple targets, disrupt insurgent activity and restore Iraqi Security Forces control of North Haifa Street. This area has been subject to insurgent activity...