"Sedition isn't a crime here in the US. In fact it's considered protected speech in most cases."
Danny, I really hate to be the bearer of bad news, but Federal law was complemented by state sedition legislation in 27 states, with a 1918 enactment in Montana for example making it an offence to be "disloyal, profane, violent, scurrilous, contemptuous or abusive" about the government, US soldiers or flag.
The UK 'bad tendency' doctrine was retained in US law, despite adoption of the First Amendment, with the 1798 federal Alien & Sedition Laws — for example: enabling action against "false, scandalous, and malicious writings" against the government, Congress or President intended to defame, excite hatred or "stir up sedition".
Roosevelt sought a treaty that would make advocacy of killing an offence under international law. Congress more modestly provided legislation to exclude entry into the US of anyone "teaching disbelief in opposition to all organised government".
As far as I am aware you can still be deported under any or all of some very old sedition laws still on statute.
You get your facts correct, Dan.