6 U.S. Code § 496
6 U.S. Code § 496 is about Relation to the National Security Council. It is under Subchapter IX (National Homeland Security Council) of Chapter 1 (Homeland Security Organization) of Title 6 (Domestic Security) of the Code.
The President may convene joint meetings of the Homeland Security Council and the National Security Council with participation by members of either Council or as the President may otherwise direct.