; and (IV) other network adequacy standards to ensure that care through these plans is accessible to diverse communities, including individuals with limited-English proficiency as defined in section 3400 of such Act; and (iii) provide coverage for services for enrollees through out-of-network providers at no additional cost to the enrollees in cases where in-network providers are unable to comply with the standards established under subclause (III) or (IV) of clause (ii) for such services and the out-of-network providers can deliver such services in compliance with such standards. (b) Effective date The amendments made by subsection (a) shall not apply to plans beginning on or prior to the date that is 1 year after the date of the enactment of this Act. . 431. Improving access to dental care (a) Reports to Congress (1) GAO reports Not later than 1 year after the date of the enactment of this Act, the Comptroller General of the United States shall submit to Congress— (A) a report on the Alaska Dental Health Aide Therapists program and the Dental Therapist and Advanced Dental Therapist programs in Minnesota, to assess the effectiveness of dental therapists in— (i) improving access to timely dental care among communities of color; (ii) providing high quality care; and (iii) providing culturally competent care; and (B) a report on State variations in the use of dental hygienists and the effectiveness of expanding the scope of practice for dental hygienists in— (i) improving access to timely dental care among communities of color; (ii) providing high quality care