; (2) whether there are sufficient legal and policy authorities in place to implement such mandatory cybersecurity policies or defensive measures; (3) a description of enforcement mechanisms for such mandatory cybersecurity policies or defensive measures; and (4) the timeline for implementation of such mandatory cybersecurity policies or defensive measures. (b) Briefings Not later than 90 days after the date of the enactment of this Act, and quarterly thereafter during the one-year period following the date of such enactment, the Director shall provide to the congressional intelligence committees and the Committees on Armed Services of the House of Representatives and the Senate a briefing on the study. (c) Definitions In this section: (1) Defensive measures The term defensive measures has the meaning given that term in section 102 of the Cybersecurity Information Sharing Act of 2015 ( 6 U.S.C. 1501 ). (2) National security system The term national security system has the meaning given that term in section 3542 of title 44, United States Code. 608. Artificial intelligence research and development (a) Findings; sense of congress (1) Findings Congress finds the following: (A) All elements of the intelligence community employ artificial intelligence in some form, and the artificial intelligence research and development efforts of many of the elements overlap; (B) the elements do not adequately share resources, expertise, and data and often fail to make even closely related systems interoperate; (C) siloed artificial intelligence research and development inefficiently splits resources across the intelligence community leading to duplicative and less effective capabilities; (D) developing state-of-the-art artificial intelligence capabilities requires large quantities of training data, computing power, and subject matter expertise