Recent political developments in the United States have resulted in various laws being proposed

Recent political developments in the United States have resulted in various laws being proposed, debated, and sometimes passed that would limit speech deemed offensive or illegal, or limit social media companies ability to moderate their platforms.  Some examples are:

• a proposed South Carolina law that would make it illegal to host a website providing information that would “reasonably likely be used for an abortion.”
• a Florida law (currently stayed due to a Court of Appeals injunction against enforcement) that would prohibit internet platforms from removing or moderating any speech by or about political candidates.
• a Texas law prohibiting social media companies from banning users based on their viewpoint.

Comment on these recent developments in freedom of speech.  Are these laws legal under the US Constitution Bill of Rights (which has been applied to states after the Fourteenth Amendment)?  What are the implications if these laws and others like them are allowed to be enforced?  What are the implications if these laws and others like them are determined to be unconstitutional?  After you post a thoughtful, civil discussion of these issues, please make a civil and non-trivial 

WARNING!!!!  These are hot button topics. I fully expect all comments to be civil and thoughtful