Judge Cox has presided over many complex civil and criminal cases. In November of 2010, Judge Cox was assigned the longstanding civil action involving the Detroit Water and Sewerage Department, filed in 1977. In 2013, Judge Cox was appointed by Chief Bankruptcy Judge Steven Rhodes to serve as a mediator in the City of Detroit Bankruptcy case and he successfully mediated a resolution of several issues impacting the bankruptcy case, which ultimately resulted in the creation of the Great Lakes Water Authority.