Does the CDA delegate regulatory authority over 230 to the executive branch? If so, what authority is that?

He might try having the FCC enforce it; they recently got a quorum again.

From a previous draft:

"The Trump administration’s proposal seeks to significantly narrow the protections afforded to companies under Section 230 of the Communications Decency Act, a part of the Telecommunications Act of 1996. Under the current law, internet companies are not liable for most of the content that their users or other third parties post on their platforms. Tech platforms also qualify for broad legal immunity when they take down objectionable content, at least when they are acting “in good faith.”

https://www.cnn.com/2019/08/09/tech/white-house-social-media...

Which should be eliminated.