First and foremost, the bill made no mention of cryptocurrencies but rather virtual currencies and i don't think Bitcoin can be catergorized as a virtual currency because in order to use it to purchase most things, you will need to cash it out first.And how are they going o know who has bitcoins.
It does belong to the category of vitual currency because it is unregulated and mostly controlled by developers and not a certain government. The congress made such bill because there are many unnamed and un designated wealth by btc. And the only way to know that is to convert it at least or buy something that has an identity on it. A lot of online stores now accept btc as payment. I would want to see if this could turn into a law.