United States antitrust law
In December 2010, Virgin Blue entered into alliances with Etihad Airways and Air New Zealand for code-sharing, reciprocal lounge and frequent flyer access and other co-operational projects. Virgin Blue also entered into talks with Delta Air Lines about the possibility of joining SkyTeam, one of the top three alliances in the world, as V Australia and Delta sought approval for an agreement between the two airlines to co-operate on trans-Pacific services. The agreement was rejected by the United States Department of Transportation under United States antitrust law. Upon review the agreement was approved by the United States Department of Transportation on 10 June 2011.