Treason:
https://www.law.cornell.edu/uscode/text/18/2381
Whoever, owing allegiance to the United States, levies war against them or adheres to their enemies, giving them aid and comfort within the United States or elsewhere, is guilty of treason and shall suffer death, or shall be imprisoned not less than five years and fined under this title but not less than $10,000; and shall be incapable of holding any office under the United States.
Seditious Conspiracy:
https://www.law.cornell.edu/uscode/text/18/2384
If two or more persons in any State or Territory, or in any place subject to the jurisdiction of the United States, conspire to overthrow, put down, or to destroy by force the Government of the United States, or to levy war against them, or to oppose by force the authority thereof, or by force to prevent, hinder, or delay the execution of any law of the United States, or by force to seize, take, or possess any property of the United States contrary to the authority thereof, they shall each be fined under this title or imprisoned not more than twenty years, or both.
I would agree it’s not Treason for CNN to edit Trumps speech. But there is a case for seditious conspiracy.
Remember that CNN is an american company owned by foreign nationals who have actively worked with other actors to undermine/overthrow the president of the USA.
Everyone of the media on that wikileaks email regarding Hillary Clinton dinner could be subject to this depending on their role and participation in the fake russian collusion story. CNN, MSNBC, FOX news, anyone who knew the truth and still published the false narrative without informing the public, could be subject
to this charge.