How a functioning democracy does it
By 
The attempted coup happened barely over a year ago:
Yoon Suk Yeol, the impeached president of South Korea, was found guilty of insurrection and sentenced to life in prison on Thursday over his failed attempt to impose martial law on the U.S. ally.
The highly anticipated ruling, delivered by a Seoul court, was broadcast across the nation. Prosecutors had asked for the death penalty for Yoon, whose short-lived power grab sent the Asian democracy into political turmoil.
The verdict and sentence was handed down by a three-judge panel at Seoul’s Central District Court, where Yoon’s supporters and critics gathered amid heightened security.
Yoon, 65, had pleaded not guilty to insurrection, the most serious of a range of charges he faces in connection with his 2024 martial law order. Prosecutors had asked for the death penalty in the case.
The court also found Yoon had subverted the constitutional order and abused his authority by ordering troops to storm parliament and arrest certain individuals including Lee Jae Myung, the liberal opposition leader at the time who is now South Korea’s president.
Weird, I guess they haven’t read the treatise from John Roberts explaining how the inherent nature of executive authority entails the inalienable right to commit crimes with impunity.