Recently, the neglected question of why the US government borrows, given that it can print money, has arisen in the context of discussions surrounding a new documentary, Finding the Money. As L. Randall Wray observes in this one-pager, Modern Money Theory has been providing answers to this question for some time; and, he argues, it is a topic that mainstream economists are ill-equipped to address, since very few concern themselves with the monetary operations that underlie the question of why a currency-issuing government issues debt.

Source: If Government Can Print Money, Why Does It Borrow? | Levy Economics Institute