McConnell warns GOP: Don’t help re-elect Obama

WASHINGTON — Fail­ure to raise the U.S. debt limit would prob­a­bly ensure Pres­i­dent Barack Obama’s re-election in 2012, Sen­ate Repub­li­can leader Mitch McConnell warned fel­low con­ser­v­a­tives on Wednes­day, fresh evi­dence of deep GOP polit­i­cal divi­sions on an issue of para­mount impor­tance to the nation and its economy.