3 = Section 3. 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.
Study the Civil War. Abe Lincoln.
The primary role of the executive branch is to preserve the Constitution (#1) and enforcement of Laws passed by Congress (#2). Laws are subordinate to the Constitution.