United States Constituion, Article III, Secontion III:
1: Treason agsint the United States, shall consis only in levying War against the, or in adhering to their Enemies, giving them Aid and Comfort. No Person shall be convicted of Treason unless on the Testimony of two Wintesses to the same overt Act, or on Confession in open Court.
2: 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.
Attainder: definition: the extinction of the civil rights and capacities of a person upon sentence of death or outlawed usually after a conviction of treason. Webster Dictionary
Corruption of Blood: definition: the effect of an attainder which bars a person from inheriting, retaining, or transmitting any estate, rank, or title. Webster Dictionary