Question: What started on 18 September 2015, when the United States Environmental Protection Agency (EPA) issued a notice of violation of the Clean Air Act to German automaker Volkswagen Group, that had an American attorney, specializing in mediation and alternative dispute resolution oversee their U.S. compensation of VW diesel owners affected?

Michigan v. Environmental Protection Agency, 576 U.S. ___ (2015) , was a landmark United States Supreme Court case in which the Court analyzed whether the Environmental Protection Agency must consider costs when deciding to regulate, rather than later in the process of issuing the regulation.  Writing for a 5–4 majority, Justice Antonin Scalia held that the EPA must consider costs and that it interpreted the Clean Air Act unreasonably when it determined that it did not need to consider costs when it issued a "finding" that it was "necessary and appropriate" to regulate.  Critics of the Environmental Protection Agency praised the Court's decision, while other commentators criticized Justice Scalia's decision to ignore health impacts in his opinion.  Some commentators suggested that the decision may derail President Barack Obama's climate change agenda entirely. <SEP> Centre for Effective Dispute Resolution (CEDR) is a London-based mediation and alternative dispute resolution body.  It was founded as a non-profit organisation in 1990, with the support of The Confederation of British Industry (CBI) and a number of British businesses and law firms, to encourage the development and use of Alternative Dispute Resolution (ADR) and mediation in commercial disputes.  Professor Karl Mackie, a barrister and psychologist, became the organisation's Chief Executive and Eileen Carroll QC (hon), a Trans-Atlantic partner with a law firm (who had been involved in the initiative to form CEDR) joined to become the Deputy Chief Executive in 1996.  On 12 June 2010 it was announced in the Queen's Birthday Honours that Karl Mackie was awarded the CBE (Commander of the Order of the British Empire) by the UK Government for ‘services to mediation', the first citing of this reason for the award. <SEP>  The agency had found that Volkswagen had intentionally programmed turbocharged direct injection (TDI) diesel engines to activate some emissions controls only during laboratory emissions testing. The Volkswagen emissions scandal (also called "emissionsgate" or "dieselgate") started on 18 September 2015, when the United States Environmental Protection Agency (EPA) issued a notice of violation of the Clean Air Act to German automaker Volkswagen Group.  The programming caused the vehicles' NO output to meet US standards during regulatory testing but emit up to 40 times more NO in real-world driving.  Volkswagen deployed this programming in about eleven million cars worldwide, and 500,000 in the United States, during model years 2009 through 2015. <SEP> Kenneth Roy Feinberg (born October 23, 1945) is an American attorney, specializing in mediation and alternative dispute resolution.  Feinberg was appointed Special Master of the U.S. government's September 11th Victim Compensation Fund and served as the Special Master for TARP Executive Compensation.  Additionally, Feinberg served as the government-appointed administrator of the BP Deepwater Horizon Disaster Victim Compensation Fund.  Feinberg was appointed by the Commonwealth of Massachusetts to administer the One Fund—the victim assistance fund established in the wake of the 2013 Boston Marathon bombings.  Feinberg was also retained by General Motors to assist in their recall response and by Volkswagen to oversee their U.S. compensation of VW diesel owners affected by the Volkswagen emissions scandal.  Kenneth Feinberg is also an adjunct professor at the Columbia University School of Law, University of Pennsylvania Law School, Georgetown University Law Center, New York University School of Law, the University of Virginia School of Law and at the Benjamin N. Cardozo School of Law.