My guess, based on recent history: It will be an executive order that requires companies with a communications product and over 500k users to implement lawful

My guess, based on recent history: It will be an executive order that requires companies with a communications product and over 500k users to implement lawful intercept protocols for communications between any two users. Most likely companies will repurpose their GDPR tools to provide standardized exports to authorities with legal intercept requests. The regulation will be written in such a way that it precludes end to end encryption as an option, rather than forbidding it specifically. Failure to comply with lawful intercept requests will result in a fine with high interest.