; (B) interoperable standards developed and maintained by intergovernmental partnerships; and (C) interoperable standards developed and maintained by Federal entities with authority over contracting and financial assistance. (4) Data exchange standards for federal reporting (A) Designation The Director may, in consultation with the working group established under this section, National Drug Control Program Agencies, and State, local, and Tribal governments, designate data exchange standards to govern Federal reporting and exchange requirements for National Drug Control Programs, as appropriate. (B) Requirements The data exchange reporting standards required by subparagraph (A) shall, to the extent practicable— (i) incorporate a widely accepted, nonproprietary, searchable, machine-readable format; (ii) be consistent with and implement applicable accounting principles; (iii) be implemented in a manner that is cost-effective and improves program efficiency and effectiveness