There's been the whisper of a similar suggestion here in Australia, too, after a recent domestic terrorism incident. The murderers had some 3D printed parts intended for their weapons, but they hadn't used them. I don't think the measures proposed in the US bills will be adopted in Australia, for all of the US' prattling on about their Bill of Rights, the obvious solution to this would be to toss away the printer's MB, fit a Raspberry Pi and run Klipper on it, the US legislation has no more chance of stuffing this genie back in the bottle than they did when the Feds passed a bill that banned deeper-than-56-bit-encryption, 90s if my memory's not at the pub. That being said, they've got form at dumb-assed legislation that can't, won't and doesn't achieve anything beyond frustration, inconvenience and wasting time and money. Amazing that other people in that society can shoot the moon, isn't it?