"Although the United States benefits from ludicrously cheap interest rates on its treasury bills, in 2019 it will spend $383 billion just to service its debt. By 2023, interest payments are expected to be larger even than the U.S. defence budget. Even now, $383 billion dwarfs the entire federal budget of Canada."
The utterly unbelievable scale of U.S. debt right now | National Post
https://nationalpost.com/news/the-utterly-unbelievable-scale-of-u-s-debt-right-now