President Obama and Vice President Biden need to rely on Federal Reserve Chairman Bernanke to print up enough Federal Reserve Notes (16-20 trillion plus) to last for their second term (2013-2017)
Of course, the Federal Reserve System permits the president and congress "to spend all they want" so the national debt ceiling by necessity needs to rise to 16-20 trillion for the president's second term -- but if the president and congress had to actually raise enough taxes to accommodate and pay for all their spending they would risk being voted out of office by angry voters and they will not take that risk.
However, the president, congress, and all the would be angry voters, should seriously start considering ending the national debt altogether by nationalizing the Federal Reserve System (Public Central Bank-Fire The Fed), revoking the bankers power to print money and make loans (end the national debt) to the Federal Government at interest.
There would be no more debt ceilings to raise and no more national debt owed to the bankers at the Federal Reserve - debt and interest free United States Notes issued by the Treasury replacing all the interest bearing and debt laden Federal Reserve Notes authorized by the Federal Reserve - Abolish The Federal Reserve System, thereby restoring the sovereignty, freedom, and independence of the American people and the fiscal integrity of the United States, assured, sound and secured.