Word on the street (and by that I mean Twitter posts from David Hogg) are a Biden presser on gun control tomorrow.
It is anticipated that this will be "administrative rulings" i.e. not laws because they couldn't pass them but they might as well be because they'll charge you if you violate them with regards to "ghost guns", and 80% receivers.
Expect something completely obtuse, likely impossible to apply evenly (which is what they want), and which will likely make a whole lot of very legal items suddenly questionable, and which will cause a lot of the legal supply of parts to be shuttered for now due to fear by sellers and manufacturers.
Essentially more of the ATF inventing things. If this is a fraction as big as is what is anticipated, this may be one of the better chances for a court case bringing the law-making... excuse me, "rule-making" authority of the ATF to heel to some extent.