“The legislation’s vocal critics argue that the bill’s effort to do so is slapdash, particularly a bit that would declare anyone “responsible for and regularly providing any service effectuating transfers of digital assets” to be a broker, subject to tax reporting requirements.

While that definition might be more straightforward in a traditional corner of finance, it could force cryptocurrency developers, companies and even anyone mining digital currencies to somehow collect and report information on users, something that by design isn’t even possible in a decentralized financial system.

Now, a new amendment to the critical spending package is threatening to make matters even worse.“