I don't see how and why a government would allow cryptocurrencies to overtake its own currency as the medium for exchange for goods and services within the global economy. There are many reasons for this. However the idea of allowing the Government Currency to hedge against BTC is an interesting idea. We would be going back to the days before the FED was created.
The fact is the topic title is misleading and the information in the post has a different view and statements that do not collide with the topic title.
The thread is about United regulation on the energy consumption of Bitcoin proof of work algorithm while the topic title point to a direction of the digital dollar being a threat to bitcoin and other decentralized currencies.
But then we are talking of regulations again where we seek to demystify what will become of proof of work algorithm if it is regulated, but we should also know that there is already an alternative source of energy which is the less expensive and self-generated source as solar power and other clean energy.