We all know the US gov rules, dictate to rest of the world.
So if they cornered the btc market, afterwards the btc price could only go up, factor with this a few btc friendly directives, and a massive coup would have been achieved.
What is the downside?
It is possible that already have a stash of bitcoins stored away safely, who knows?? US government is not bound to disclose that to anybody! I won't be surprised if Donald Turmp himself owns few hundred of it! After all, he is a businessman!
However, there is no assurity that bitcoin price will only go up! There's no one in this world who can predict that for sure, not even Satoshi himself/themselves! It's purely speculation even if someone claims the same!