I just found this online article describing how the US Government at one point in 2012 had looked into "Shutting Down" bitcoin .... and concluded that it simply could not! Here is the link to the article.
https://www.forbes.com/sites/billybambrough/2019/10/08/the-us-government-tried-to-shut-down-bitcoin/#4db451741966

I'm going to finish reading the rest of that article now, but just wanted to quickly post the link to it, bc of this excerpt that is in the very beginning of it, which should be very comforting and encouraging to us Bitcoin adopters / enthusiasts.

Here is the excerpt:

Any serious attempt made by the U.S. Department of Justice to shut down bitcoin inevitably came to naught, with Haun saying, "it would have been akin to saying ‘let’s go prosecute cash.'"