Regarding Sedition:
Note: Citing Wikipedia because it's faster then looking it up elsewhere.
Yates v. United States, 354 U.S. 298 (1957), was a case decided by the Supreme Court of the United States that held that the First Amendment protected radical and reactionary speech, unless it posed a "clear and present danger."
_18 U.S. Code § 2384 - Seditious conspiracy
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._
So unless Schiff (I didn't look up the quote) was calling for a military coup, or is currently a member of the military, he's fine.
Since Donald Trump is a public figure, he has little ability to peruse civil matters:
In 1964, however, the court issued an opinion in New York Times Co. v. Sullivan, 376 U.S. 254 (1964) dramatically changing the nature of libel law in the United States. In that case, the court determined that public officials could win a suit for libel only if they could demonstrate "actual malice" on the part of reporters or publishers. In that case, "actual malice" was defined as "knowledge that the information was false" or that it was published "with reckless disregard of whether it was false or not". This decision was later extended to cover "public figures", although the standard is still considerably lower in the case of private individuals.
Which is why CNN can't call him a "crook" as he has never been convicted of theft, but if he was convicted of stealing a candy bar, they can, since it's true, technically. They can put the words in the same sentence, but they have to work around it by suggesting something like; #statement#, does that make him a crook? or what Donald does, I've been hearing, people have said, somebody told me that. Or what Fox does, they just put the words and concepts next to each other in separate sentences. So, they'll say something like "Under federal law it's a crime to #statement#. #Person# was seen with #statement#." They never actually claim anything other than their true statements.
Welcome to #fakenews.