Of course, it would affect bitcoin in a bad way. Just like any other bad news in the past that were significant enough in the eyes of the majority, it will drag the price of bitcoin down and depending on the severity of the issue, the price of Bitcoin also follows. Just imagine what the effects would be by then when a negative news that includes the US ever arises like what you have mentioned. It will inevitably affect the price negatively. But this doesn't mean death for bitcoin though, in my opinion, bitcoin will still be able to recover even if such an event happens in the US. (This includes the entirety of this industry)