There isn't. That's why we have budgets that have to be set and voted on by Congress and signed by the President and why we have deficits. If it was simply a matter of printing money and that's it, it wouldn't be an issue and budgets would only be limited by the speed money can be printed.
LIke the pic of the 2023 15 Euro cent 1/10oz gold bullion bull coin from Spain. Is it actually worth 15 cents? Did Spain goof up and people can snatch up $204 worth of gold for 15c? No, it sells for the day's spot price of gold (4/5/23: $2041, so $204.10) plus a markup for the dealer. So why issue it at 15c face value instead of higher? The Spanish mint pays the central bank 15c for it, and everything over that and the price of gold is profit.
Same deal with the US Silver Eagle. 1oz, 1$ face value. Silver spot now is round $24, but it will cost you round $44 to buy it a 2023 one from a bullion dealer. The proof version for collectors is $80 from the US Mint. 24 + 1 + minting costs is what it costs the mint, so what's left of the $80 after that is a hefty profit. Now it would be more attractive to buyers it it had a $25 face value and sold fo that, but that wouldn't be as profitable for the mint now, would it?