If the United States were to suppress BTC now, the price of BTC might collapse in an instant.

Sad truth. But how possible is enabling the reversal of transaction on the BTC network. There is a keyword, which is immutability that comes with being a blockchain, taking that out just renders BTC as a digital dustributed ledger which is no longer BTC. What the world wants is that piece of tech that can’t be reversed, if that’s what the United States want, they can go to make their own.