The Government Accountability Office (GAO) has issued a report entitled “Federal Antitrust Policy: Stakeholders’ Perspectives Differed on the Adequacy of Guidance for Collaboration among Health Care Providers.” In response to a Congressional request, the GAO examined the perspectives of health care industry groups and antitrust law experts on how federal antitrust guidance may affect the ability of health care providers to collaborate to improve health care quality, such as through accountable care organizations. In particular, stakeholders differed on the adequacy of guidance on clinical integration and the use of exclusive collaborative arrangements.