Here's my big concern: If every big social media provider has to bake American policy position into its algorithm, what's going to happen to approaches like Bluesky or Mastodon/ActivityPub which allow users to choose their own algorithm?
Nation states definitely can by using port targeting, traffic heuristics, and DPI. The US historically has not done this but several other states have. Even if protocols are preserved, I wouldn't want to be in a situation where I have to run a client on my local machine that consumes from the protocol. I want to be able to use a hosted client.
A user should be able to use another person's hosted Mastodon instance or Bluesky AppView/Relay.