North Korea Intelligence Enhancement Act This bill requires the Office of the Director of National Intelligence (DNI) to establish an integration cell among relevant elements of the intelligence community to integrate intelligence relating to the monitoring and enforcement of United Nations Security Council resolutions with respect to North Korea. Such cell shall: coordinate and synchronize all intelligence collection relating to the implementation of sanctions against North Korea, integrate the early warning systems of the intelligence community with respect to detecting activities by North Korea to proliferate weapons of mass destruction, identify any gaps in intelligence relating to the monitoring of the North Korean nuclear weapons program, and provide net assessments and recommendations to the DNI relating to North Korea. The integration cell shall be headed by a member of the Senior Intelligence Service, who shall report to the DNI.