My assumption has always been that government mandated blockage of any website is not allowed in the US as it was an "abridging the freedom of speech".
Is the banning of websites within the US legally different than the banning of specific applications from an app store? Can the US government ban the accessing of certain websites?
First Amendment of the US Constitution:
Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances.
I have been made aware that more generalized questions may reflect the true nature of this Legality.
On the accessing of websites: Can the United States Government ban access to certain websites/services?
On the publication of software: Can the federal government prohibit the publication of software it does not like?
On the distribution of software: Is the distribution of software protected under free speech?
I think this question is still good to keep up as it has an answer. However, I feel like these do better reflect the overall question.