R.I. Gen. Laws § 30-13-104: Aiding the enemy.

Any person subject to this code 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 be punished as a court-martial may direct.