; and (C) make recommendations to the Committee on Transportation and Infrastructure of the House of Representatives and the Committee on Commerce, Science, and Transportation of the Senate to mitigate instances of sexual assault and sexual harassment in the Coast Guard and improve the enforcement relating to such instances within the Coast Guard, including proposed changes to any legislative authorities. (b) Report by Commandant Not later than 90 days after the date on which the Comptroller General completes all actions under subsection (a), the Commandant shall submit to the Committee on Transportation and Infrastructure of the House of Representatives and the Committee on Commerce, Science, and Transportation of the Senate a report that includes the following: (1) A plan for Coast Guard implementation, including interim milestones and timeframes, of any recommendation made by the Comptroller General under subsection (a)(2)(B) with which the Commandant concurs. (2) With respect to any recommendation made under subsection (a)(2)(B) with which the Commandant does not concur, an explanation of the reasons why the Commandant does not concur. 503. Requirement to maintain certain records (a) In general Chapter 9 of title 14, United States Code, is amended by adding at the end the following: 955. Requirement to maintain certain records (a) In general The Commandant shall maintain all work product related to documenting a disposition decision on an investigation by the Coast Guard Investigative Service or other law enforcement entity investigating a Coast Guard member accused of an offense against chapter 47 of title 10. (b) Record retention period Work product documents and the case action summary described in subsection (c) shall be maintained for a period of not less than 7 years from date of the disposition decision. (c) Case action summary Upon a final disposition action for cases described in subsection (a), except for offenses of wrongful use or possession of a controlled substance under section 912a of title 10