Mississippi ex rel. Hood v. Entergy Mississippi, Inc.

Carlton W. Reeves, UNITED STATES DISTRICT JUDGE

*725Federal courts "have an independent obligation to determine whether subject-matter jurisdiction exists, even in the absence of a challenge from any party." Arbaugh v. Y & H Corp. , 546 U.S. 500, 514, 126 S.Ct. 1235, 163 L.Ed.2d 1097 (2006) (citation omitted). This obligation helps the judiciary adhere to the principles of federalism enshrined in the Constitution. It exists no matter what the parties may prefer or how much time they have spent preparing their case for adjudication in federal court.1 If "a federal court determines that it is…