Debt--The US Debt is over $15 Trillion, Underfunded Pension Obligation is $4 Trillion

It is totally irresponsible for either presidential candidate to ignore these obligations.  The national debt figure is cited by TheGoldStandardNow.org  and the underfunded pension obligation by Harvard.edu

Romney especially, does not mention these figures, while for over a year, he has been advocating a $5 trillion tax break skewed to the rich.  I have heard him talk about being able to balance the budget, but how about these obligations of nearly $20 trillion, plus money owed by the US to the Social Security Trust Fund?