Dear @rok-sivante sir!
It would be just like a daydream when Bitcoin reaches 1 million American Dollar. In such a situation, you will become a billionaire(don't take seriously sir) with you and many people will also become a billionaire. The US will have to bear huge economic losses, face the economic slowdown.
If we look at the other perspective, it will take decade to reach this position and if the price of bitcoin increases, then the value of the US dollar will increase equally. For example, the price of inflation is likely to be in the next 10 years, its four Increase six times more inflation. If the price of bitcoin increases, then the price of the US dollar will not be stable, that too will increase accordingly. This is my own opinion sir.
Regards