That concept "the rest of the world will save us" really doesn't seem to be working anymore. I think it's not working because most of the worlds governments/regulatory systems are as dysfunctional as the US system.
Yes exactly...China and India have already both come down hard on BTC. Those are the two most populous countries on the earth and something like 2.8 billion people. So next is #3 to come down hard on it and that is the USA.
And no it won't "kill" bitcoin as we all know you can't really kill the protocol but it will kill the chance for many more hundreds of millions of people to use it to make their lives better. And it will also hurt the value/price of BTC of course.