SelectPlusObama, McCain Lock Horns Over EconomyObama, McCain Lock Horns Over EconomyThe Associated PressWith the faltering U.S. economy now the most important issue to voters, Barack Obama began a two-week campaign tour, hoping to highlight the fiscal differences between himself and rival John McCain. (June 10)Hoping to seize on record gas prices and a recent spike in unemployment rates....Barack Obama strolled into North Carolina Monday --- kicking off a two week campaign tour that will focus largely around the ailing U.S. economy.And, from the outset, Obama made it clear how he was hoping to frame the debate...SOT: Obama --- When we are fighting two wars, paying $4 a gallon for gas, etc...he's willing to give Exxon Mobile a tax break.The economy is an issue the Illinois Senator is trying to make his own --- rather than national security --- where polls show his Republican rival John McCain has the edge.Obama dubs McCain's economic plan a --- quote -- "full-throated endorsement of...