https://www.nytimes.com/2024/07/01/us/politics/trump-liz-cheney-treason-jail.html
Mr. Trump has repeatedly called for the imprisonment of his political opponents, often singling out members of the Jan. 6 committee. But the two posts that Mr. Trump amplified on Sunday particularly stand out.
One proposed jailing an extensive list of high-ranking officials, including Mr. Trump’s former vice president, the top Republican in the Senate and the current president and vice president. The other invoked the dictatorial imagery of a televised military tribunal, which would strip Ms. Cheney of her right to due process similar to the military courts used to prosecute terror suspects at Guantánamo Bay
And if he becomes president it'll be legal too.
Not that he would actually do it since he had the chance the first time he was El presidente