Actually the US debt-to-GDP ration isn't all that bad, and its deterioration (or increase, depending on interpretation...) of the last decade is largely due to

Actually the US debt-to-GDP ration isn't all that bad, and its deterioration (or increase, depending on interpretation...) of the last decade is largely due to spending on war, not due to fiscal or socio-economic factors (that is to say, this is spending that can 'easily' be cut). Whereas the other countries with ratios similar to that of the US have historically not had much better figures, and their deficits are due to enshrined socio-economic structures.