But every bitcoin satellite service base in the U.S. will be closed and bitcoin stored online - will be most likely snatched by IRS or some other cell.
Not to mention of global mass panic, bitcoin's price collapse... This action would put BTC back when it was in 2011-2012
I don't really think that such a ban would cause any dramatic consequences
Look, the US seems to be divided into two camps heavily opposing each other. And this divide is a very specific one since it is not about the authorities and the population hating each other but between authorities and population on the one side and authorities and population on the other. We see that some highest-rank officials like Attorney General (the US top law enforcement officer) are openly defying Trump the President. So would this ban mean anything at all if it is almost certain that it will be opposed at any level just for the sake of opposition?
And remember, the forbidden fruit is sweet indeed