If you want to go strict econ here...it’s actually never been cheaper for the US government to borrow money...which means they can make it at Will.
But you’re not trying to do the nonsense “deficit hawk” thing are you? Does anyone fall for that anymore?
The interest rate is just the carrying cost on the debt. The more dollars that are printed, the less each one will be worth when it is not backed by GDP growth. Paying people not to work doesn't grow the GDP.