Well let's stop disagreeing with you and say you are correct.
What would happen? A new coin or a switch to a different coin.
As a USA citizen I would find another coin to mine and if you see the growth of all coins such as Zec and eth the shift to another place to mine has happened as I type.
This is why alt coins have purpose to keep other paths to mining open.
I would love for China and Trump to fight it out.
Btw China has more then 4 trillion in USA bonds. And we all know Trump has done a lot of renegotiation of debt over the years.
So he has a stick to poke China . Should be fun to see it unfold.
Hmm,
My best guess ,If the conflict does get heated ,
1. If Trump is not interested in the US going Crypto
He places huge Tariffs on BTC, and the Marketplace picks another coin without Tariffs that is decentralized to replace it.
(Which would also exclude any PoW Algo that ASICS could produce, since the Chinese have enough ASICS to control any PoW coin.)or
2. If Trump is interested in the US going Crypto,
A New Crypto Coin would be created , and it would be deemed Legal Tender in the US.
No other coin would be a match for it, if it was granted full legal tender status in the US.
or
3. If Theymos , can get his proposed changes made to BTC , it would Decentralize BTC and it would no longer be Chinese Dominated ,
meaning it would no longer be caught in the middle of a US / China Trade World.
(This would be the best Outcome for BTC, but one the Chinese Miners would find hardest to accept.) 