2. Some people worry that the US government's debt is too high. Currently the US debt is about $28.1 trillion, and the debt-to-GDP ratio is about 108%. Which is a better measure of how near the US government is to default on its debt? Would you personally be worried about default if your debt-to-income level were 108%? Does the fact that the population is aging, making Medicare and Social Security more expensive complicate this issue? Discuss