Who in America would benefit from fighting this? Crypto is a real industry. It’s more profitable for the financial sector than similar activity in U.S. dollars. And the Fed doesn’t thoroughly love that it has to take international factors into account when its political mandate is purely domestic.
There is the interventionist foreign policy elite, but they aren’t on strong footing right now. The claim that the U.S. is hellbent on preserving the primacy of the U.S. dollar is largely a myth.