Article 3, Section 3

Short Version -- This is a summary of the important issues covered in this section of the U.S. Constitution. 

• It is treason to make war on the United States or to give aid to its enemies.
• A person can be convicted of treason if he/she confesses in court or if there are two witnesses to the act of treason.
• Congress determines the punishment for treason.

Long Version -- This is the text of the Actual U.S. Constitution. 

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 the testimony of two witnesses to the same overt act, or on confession in open court.

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.