UCMJ Section §903b. Art. 103b. Aiding the enemy Any person who— (1) aids, or attempts to aid, the enemy with arms, ammunition, supplies, money, or other things; or (2) without proper authority, knowingly harbors or protects or gives intelligence to, or communicates or corresponds with or holds any intercourse with the enemy, either directly or indirectly; shall shall suffer death or such other punishment as a court-martial or military commission may direct.
,,,and Federal Statute: 18 USC Ch. 115: TREASON, SEDITION, AND SUBVERSIVE ACTIVITIES: