BYRON YORK: Will Ryan hit Biden hard on Libya scandal? “In a series of events that could not have been predicted just a few weeks ago, the day before the VP debate saw a significant addition to President Obama’s record. A House committee heard extensive testimony establishing that the Obama administration refused requests for heightened security from ambassador to Libya Christopher Stevens and his aides, requests made just weeks before Stevens and three other Americans were murdered in a terrorist attack timed to coincide with the anniversary of September 11. House testimony also established beyond any doubt that Obama, Secretary of State Hillary Rodham Clinton, White House spokesman Jay Carney, and UN Ambassador Susan Rice all made untrue statements when they attributed the attack to angry protests over an anti-Muslim video.”

UPDATE: Biden faces different debate challenges than in 2008.