Yoon, who was impeached by the National Assembly last Saturday for his short-lived imposition of martial law on Dec. 3, has not been cooperating with the ongoing investigation into treason charges ...

The Congress shall have Power to declare the Punishment of Treason, but no Attainder of Treason shall work Corruption of Blood, or Forfeiture except during the Life of the Person attainted.

Treason against the United States, shall consist only in levying War against them, or in adhering to their Enemies, giving them Aid and Comfort. No Person shall be convicted of Treason unless on ...