[JURIST] The US Supreme Court [official website; JURIST news archive] declined Tuesday to rule on a DC same-sex marriage referendum and a Guantanamo detainee appeal but granted certiorari [order list, PDF] in a consolidated case involving Medicaid reimbursement rates. In Jackson v. DC Board of Elections and Ethics [docket], the court denied certiorari without comment in a case over whether to allow a public referendum over Washington, DC’s same-sex marriage law [JURIST news archive]. The order leaves in place the…