Well Thinking Trump can't ban it in the US would be a mistake.
By using an executive order, he could make it illegal for all US citizens to own it and transact in it.
(He already block the crypto called petro.)
https://www.investopedia.com/news/trump-block-venezuelan-cryptocurrency-petro/While their are a small minority that would break the law and keep using btc.
The Majority including the Major US Firms would not.
The consequences is that he probably give a few months for everyone to sell before that criminal penalties went into effect.
So there would be a massive sell off, and bitcoin price would be in the shitter, most likely below $500.
Which would cause another rash of miner bankruptcies.
While odds are 50/50 on what Trump does,
China is more likely to ban all crypto coins 1st ,
as they are coming out with their own State sponsored crypto coin, (which they will control).
https://www.scmp.com/news/china/economy/article/2111456/why-has-china-declared-war-bitcoin-and-digital-currencieshttps://www.forbes.com/sites/michaeldelcastillo/2019/08/27/alibaba-tencent-five-others-to-recieve-first-chinese-government-cryptocurrency/#42a53c751a51Many people believe bitcoin can not die, sorry to be the bearer of bad news,
but it most likely will die if
all of the World powers turn against it.
With the production cost of creating new bitcoins in the thousands, a market price of below that is one of the scenarios that kills bitcoin.
Bitcoin lost it's ability to hide it's mining operations from government powers because of excessive power use.
Only staking crypto coins can hide well enough to evade government censorship, as they can be run on laptops behind tor or vpns.
The Power companies can not pinpoint their location like they can a bitcoin mining operation.
Won't this go against the States already regulating it? Can Trump also use an executive order to ban Cannabis again from the whole country?
Currently Trump is forbidding nearly anything to American citizens and companies regarding Venezuela, except for "humanitarian" things. Petro is a centralized coin, and it can only be used from a single server providing online wallets in Venezuela, i haven't tried but i guess you could connect to it via Tor. Not that you should, Petro is really bad an altcoin and should be avoided for several different reasons, not political but technical (think: State scam).
That said Bitcoin cannot die. Nope, not even if ALL states ban it (good luck with that). It would just go underground, number of transactions would decrease, perhaps mining as well, but it will not die. Price might even soar (remember, illegal = scarce therefore expensive).
We could all transact p2p using tor or similar, and no gov would ever know. ISPs can detect tor activity, but not what activity is going on in it. You could be reading some manifesto or sending bitcoin. Mining can simply shrink down as i predict will do anyway after some more years (due to economic reasons).
An American cannot come here and say they don't deal with Petros without confessing a "crime", but i have no reason to believe they cannot do it anyway. Its like saying people don't do drugs in the States.
China and Russia is more likely to try, or perhaps they have already seen the futility of it. Once upon a time, they also believed in central planned economy, but decades of famine convinced them otherwise. So in those countries they might try and see how futile is it, and end allowing it after a few years. Even Cuba is backing down some of its half century old policies, their communist party officially stating in 2017 that some amount of market and private ownership is needed, ie. following the likes of Vietnam and China.
Trump might get pissed some fellow Americans could be dealing with China secretly in bitcoin, and thus avoiding his little tax war with them. But so far i see most good citizens declaring and paying their (new) custom fees, perhaps helping pay for the mythical Mexico wall that will end all the problems for Americans, somehow?
But if America decides to join the likes of Russia, China, maybe India, Bolivia etc; i don't think people would keep calling it "land of the free"... Or, i don't know, people could vote in next presidential elections...