Consider this, the US collects $5 trillion a year in tax revenue and has $7 trillion spending bills.
Some erroneously compare this to someone buying a house with a mortgage. What is the US buying with that extra $2 trillion? We aren't buying anything, we are paying interest on our $32 trillion debt.
Put this into perspective. Suppose you you make $100,000 a year, but you spend $140,000 a year because the interest on your credit cards is $40,000 a year and to pay that interest you are borrowing money. Is this sustainable?