Sure, there would probably be some panic, that's just how market psychology works, but it's all temporary. Eventually, the market recovers. Now, imagine if the U.S. banned Bitcoin, but at the same time, China, one of its closest rivals, lifted its ban. That could actually help the market bounce back.
1. Bitcoin is not banned in China for individuals to hold and buy, only banned for banks to hold on their balance sheet.
2. There's no chance that China's people buying more Bitcoin could possibly make up for the lost demand from the US consumer investor market, which is gigatic.
There is no "eventually" for a product that has been banned or otherwise kneecapped by the US government.
It wouldn’t be the end of Bitcoin either. Even if the price drops, as long as people can still use it for what it was intended, it’ll survive. Even if Bitcoin falls from $69k to $10k, it’s still around and doing its thing.
People don't use Bitcoin for what it was intended today: almost nobody uses it as a way to transact with the government knowing about it. Almost all holders of Bitcoin these days use it as an investment.
And $10k? After the product is banned in the USA? That would be a dream. $100 is probably more like it--especially since Trump would offer his own currency as a replacement for investors, which would have the full backing of the US government.
But honestly, the scenario you're talking about is hard to picture. The U.S. has been pretty supportive of Bitcoin, especially with encouraging institutional investors to get involved in the market.
I agree, but that was before the US elected a convicted felon who is in the business of competing with Bitcoin.
But this is different--Bitcoin isn’t controlled by the US (or even Trump if he wins). So, don’t expect them to just convince people to sell their Bitcoin and switch to Trump’s coin. That’s just beyond imaginable! Bitcoin’s power comes from being decentralized, and no one can really control it.
Unimaginable? Here, I'll imagine it for you: Congress passes a law saying that Bitcoin is taxed at 25% per year. Do that, and all Americans are "convinced" to dump their Bitcoin. (And go ask the several thousand industries from the past that got screwed over because Congress changed the tax code if they think this is all so far fetched).
Nobody can control Bitcoin*, but driving the price down by 95% could be done in one day by the US government, so some criminal US president that finds it in their own personal financial interests.
(* Unless the president orders the FBI to raid the three US companies that control over 50% of the Bitcoin hashrate and orders the core devs under threat of prison to fork Bitcoin core and declares the old fork illegal--at which point, yeah, the US government would control Bitcoin)