President Barack Obama, left, puts an arm around Sen. Bob Casey, D-Pa., as they enter Air Force One after returning to the 171st Air Refueling Wing at the Pennsylvania Air National Guard base in ... more 
President Barack Obama, left, puts an arm around Sen. Bob Casey, D-Pa., as they enter Air Force One after returning to the 171st Air Refueling Wing at the Pennsylvania Air National Guard base in Coraopolis, Pa., after Obama spoke at a steel plant in the Pittsburgh area on Wednesday, Jan. 29, 2014. (AP Photo/Keith Srakocic) less 
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Associated Press | Photo By Keith Srakocic
Wed, Jan 29, 2014 5:27 PM EST