I am not a Lawyer and do not know American law. However, I doubt that there haven't been sedition type offences committed by large members of, particularly the Republican Party. They just do not have the balls to enforce them.
In the history of Merka many politicians have been corrupt, some seriously so.
FDR was mates with organized crime, and appointed a bootlegger Joe Kennedy as ambassador to England. JFK was elected because the Mafia rigged the election in Illinois.
So having a crook in the White House is not new. Nixon was a war criminal who prolonged the Vietnam war to make it easier for him to get elected, and set up the Watergate break in to get reelected. Before him LBJ used a false flag incident to start the Vietnam War. Google the Gulf of Tokin incident.
However with Trump they have an ignorant buffoon, who has been a Russian Mafia money launderer for over 30 years, and almost certainly sold state secrets to the Russians, and also allowed his son in law to sell secrets to the Saudis. He takes being crooked to a whole new level.
He has bullied his way through government by outing anybody who crosses him to his MAGA nuts cases to threaten.
The GOP House leader Kevin McCarthy hates the bastard, and wanted him removed using the 25th amendment. However he is so cared of Trump that he is still sucking his dick. In a private speech on the weekend he said Trump was the best POTUS ever.
At this stage odds are the Trump could run again, and get reelected.
Putin will hang in for that, only 2 more years, and the Chinese will be watching as well.
This is serious shite.