It's pretty dumb to require his whole family to get out. What would they do now? Sell all their bitcoin just because Democrats demand them to do so? That's like blackmail.
How is he going to make his whole family do it and how is anyone going to confirm that they did? What about after the bill is signed? Are they allowed to get back in?

To realize the stupidity of this, imagine a situation where no members of parliament are able to vote on the things that they own. You can't decide whether electric cars get pushed if you own one. You can't decide whether foreign companies are allowed to invest in your country if you hold their stock, you can't decide if a local firm gets a government contract if you own their shares and so on.
Let's go deeper. Why is the FED allowed to decide the future of the Dollar while holding it? How can someone holding US bonds, or having a mortgage, adjust rates?