Missouri constitution
Article I: bill of rights
Section 30

That treason against the state can consist only in
levying war against it, or in adhering to its enemies, giving them aid and comfort; that
no person can be convicted of treason, unless on the testimony of two witnesses to the
same overt act, or on his confession in open court; that no person can be attainted of
treason or felony by the general assembly; that no conviction can work corruption of
blood or forfeiture of estate; that the estates of such persons as may destroy their own
lives shall descend or vest as in cases of natural death; and when any person shall be
killed by casualty, there shall be no forfeiture by reason thereof.