What follows is an opinion from the Supreme Court of the United States. Your task is to identify the court in which the case originated. Focus on the court in which the case originated, not the administrative agency. For this reason, if appropiate note the origin court to be a state or federal appellate court rather than a court of first instance (trial court). If the case originated in the United States Supreme Court (arose under its original jurisdiction or no other court was involved), note the origin as "United States Supreme Court". If the case originated in a state court, note the origin as "State Court". Do not code the name of the state. The courts in the District of Columbia present a special case in part because of their complex history. Treat local trial (including today's superior court) and appellate courts (including today's DC Court of Appeals) as state courts. Consider cases that arise on a petition of habeas corpus and those removed to the federal courts from a state court as originating in the federal, rather than a state, court system. A petition for a writ of habeas corpus begins in the federal district court, not the state trial court. Identify courts based on the naming conventions of the day. Do not differentiate among districts in a state. For example, use "New York U.S. Circuit for (all) District(s) of New York" for all the districts in New York.

Opinion:
FREEPORT-McMoRAN INC. v. K N ENERGY, INC.
No. 90-655.
Decided February 19, 1991
Per Curiam.
Petitioners seek review of a decision of the United States Court of Appeals for the Tenth Circuit, holding that a Federal District Court lacked jurisdiction to entertain their diversity action because they added a nondiverse party after filing their complaint. We grant certiorari and reverse the decision of the Court of Appeals.
Petitioners, McMoRan Oil and Gas Company (McMoRan) and its parent company, Freeport-McMoRan Inc. (Freeport), sued respondent K N Energy, Inc. (K N) for breach of contract in the United States District Court for the District of Colorado. Petitioners claimed that respondent had failed to pay the price for natural gas agreed upon in their contract, and sought both declaratory relief to establish the contract price and damages for past underpayments. Petitioners based federal jurisdiction upon diversity of citizenship. At all times up to and including the filing of the complaint, Free-port and McMoRan were Delaware corporations with their principal places of business in Louisiana. K N was and is a Kansas corporation with its principal place of business in Colorado.
After suit was filed, petitioner McMoRan transferred its interest in the contract with respondent to a limited partnership, FMP Operating Company (FMPO), for business reasons unrelated to the instant litigation. FMPO’s limited partners included citizens of Kansas and Colorado. Accordingly, before trial commenced, petitioners sought leave to amend their complaint to substitute FMPO as a plaintiff under Rule 25(c) of the Federal Rules of Civil Procedure. The District Court permitted petitioners to add FMPO as a party but did not remove McMoRan as a party. After a bench trial, the District Court held in favor of petitioners, and respondent appealed. The Court of Appeals reversed and directed that the suit be dismissed for want of jurisdiction. The court held that “although complete diversity was present when the complaint was filed,” the addition of FMPO as a plaintiff destroyed jurisdiction. 907 F. 2d 1022, 1024 (1990). The court based its holding upon our decision in Carden v. Arkoma Associates, 494 U. S. 185 (1990). The court explained that “Carden establishes that [FMPO’s] addition as the real party in interest destroys the district court’s diversity jurisdiction.” 907 F. 2d, at 1025.
Our decision last Term in Carden considered whether the citizenship of limited partners must be taken into account in determining whether diversity jurisdiction exists in an action brought by a limited partnership. The original plaintiff in Carden was the limited partnership; diversity jurisdiction, then, depended upon whether complete diversity of citizenship existed at the time the action was commenced. But nothing in Carden suggests any change in the well-established rule that diversity of citizenship is assessed at the time the action is filed. We have consistently held that if jurisdiction exists at the time an action is commenced, such jurisdiction may not be divested by subsequent events. Mollan v. Torrance, 9 Wheat. 537 (1824); Clarke v. Mathewson, 12 Pet. 164, 171 (1838); Wichita Railroad & Light Co. v. Public Util. Comm’n of Kansas, 260 U. S. 48, 54 (1922) (“Jurisdiction once acquired ... is not divested by a subsequent change in the citizenship of the parties. Much less is such jurisdiction defeated by the intervention, by leave of the court, of a party whose presence is not essential to a decision of the controversy between the original parties” (citations omitted)).
The opinions of the District Court and the Court of Appeals establish that the plaintiffs and defendant were diverse at the time the breach-of-contract action arose and at the time that federal proceedings commenced. The opinions also confirm that FMPO was not an “indispensable” party at the time the complaint was filed; in fact, it had no interest whatsoever in the outcome of the litigation until sometime after suit was commenced. Our cases require no more than this. Diversity jurisdiction, once established, is not defeated by the addition of a nondiverse party to the action. A contrary rule could well have the effect of deterring normal business transactions during the pendency of what might be lengthy litigation. Such a rule is not in any way required to accomplish the purposes of diversity jurisdiction.
Respondent relies on our decision in Owen Equipment & Erection Co. v. Kroger, 437 U. S. 365 (1978), to support the result reached by the Court of Appeals. There we held that the ancillary jurisdiction of a District Court did not extend to the entertaining of a claim by an original plaintiff in a diversity action against a nondiverse third-party defendant im-pleaded by the original defendant pursuant to Federal Rule of Civil Procedure 14(a). Owen casts no doubt on the principle established by the cases previously cited that diversity jurisdiction is to be assessed at the time the lawsuit is commenced.
The motion of American Mining Congress for leave to file a brief as amicus curiae is granted. The petition for a writ of certiorari is granted, and the judgment of the Court of Appeals is
Reversed.
Justice Souter took no part in the consideration or decision of this motion and case.

Question: What is the court in which the case originated?

Choices:
U.S. Court of Customs and Patent Appeals
U.S. Court of International Trade
U.S. Court of Claims, Court of Federal Claims
U.S. Court of Military Appeals, renamed as Court of Appeals for the Armed Forces
U.S. Court of Military Review
U.S. Court of Veterans Appeals
U.S. Customs Court
U.S. Court of Appeals, Federal Circuit
U.S. Tax Court
Temporary Emergency U.S. Court of Appeals
U.S. Court for China
U.S. Consular Courts
U.S. Commerce Court
Territorial Supreme Court
Territorial Appellate Court
Territorial Trial Court
Emergency Court of Appeals
Supreme Court of the District of Columbia
Bankruptcy Court
U.S. Court of Appeals, First Circuit
U.S. Court of Appeals, Second Circuit
U.S. Court of Appeals, Third Circuit
U.S. Court of Appeals, Fourth Circuit
U.S. Court of Appeals, Fifth Circuit
U.S. Court of Appeals, Sixth Circuit
U.S. Court of Appeals, Seventh Circuit
U.S. Court of Appeals, Eighth Circuit
U.S. Court of Appeals, Ninth Circuit
U.S. Court of Appeals, Tenth Circuit
U.S. Court of Appeals, Eleventh Circuit
U.S. Court of Appeals, District of Columbia Circuit (includes the Court of Appeals for the District of Columbia but not the District of Columbia Court of Appeals, which has local jurisdiction)
Alabama Middle U.S. District Court
Alabama Northern U.S. District Court
Alabama Southern U.S. District Court
Alaska U.S. District Court
Arizona U.S. District Court
Arkansas Eastern U.S. District Court
Arkansas Western U.S. District Court
California Central U.S. District Court
California Eastern U.S. District Court
California Northern U.S. District Court
California Southern U.S. District Court
Colorado U.S. District Court
Connecticut U.S. District Court
Delaware U.S. District Court
District Of Columbia U.S. District Court
Florida Middle U.S. District Court
Florida Northern U.S. District Court
Florida Southern U.S. District Court
Georgia Middle U.S. District Court
Georgia Northern U.S. District Court
Georgia Southern U.S. District Court
Guam U.S. District Court
Hawaii U.S. District Court
Idaho U.S. District Court
Illinois Central U.S. District Court
Illinois Northern U.S. District Court
Illinois Southern U.S. District Court
Indiana Northern U.S. District Court
Indiana Southern U.S. District Court
Iowa Northern U.S. District Court
Iowa Southern U.S. District Court
Kansas U.S. District Court
Kentucky Eastern U.S. District Court
Kentucky Western U.S. District Court
Louisiana Eastern U.S. District Court
Louisiana Middle U.S. District Court
Louisiana Western U.S. District Court
Maine U.S. District Court
Maryland U.S. District Court
Massachusetts U.S. District Court
Michigan Eastern U.S. District Court
Michigan Western U.S. District Court
Minnesota U.S. District Court
Mississippi Northern U.S. District Court
Mississippi Southern U.S. District Court
Missouri Eastern U.S. District Court
Missouri Western U.S. District Court
Montana U.S. District Court
Nebraska U.S. District Court
Nevada U.S. District Court
New Hampshire U.S. District Court
New Jersey U.S. District Court
New Mexico U.S. District Court
New York Eastern U.S. District Court
New York Northern U.S. District Court
New York Southern U.S. District Court
New York Western U.S. District Court
North Carolina Eastern U.S. District Court
North Carolina Middle U.S. District Court
North Carolina Western U.S. District Court
North Dakota U.S. District Court
Northern Mariana Islands U.S. District Court
Ohio Northern U.S. District Court
Ohio Southern U.S. District Court
Oklahoma Eastern U.S. District Court
Oklahoma Northern U.S. District Court
Oklahoma Western U.S. District Court
Oregon U.S. District Court
Pennsylvania Eastern U.S. District Court
Pennsylvania Middle U.S. District Court
Pennsylvania Western U.S. District Court
Puerto Rico U.S. District Court
Rhode Island U.S. District Court
South Carolina U.S. District Court
South Dakota U.S. District Court
Tennessee Eastern U.S. District Court
Tennessee Middle U.S. District Court
Tennessee Western U.S. District Court
Texas Eastern U.S. District Court
Texas Northern U.S. District Court
Texas Southern U.S. District Court
Texas Western U.S. District Court
Utah U.S. District Court
Vermont U.S. District Court
Virgin Islands U.S. District Court
Virginia Eastern U.S. District Court
Virginia Western U.S. District Court
Washington Eastern U.S. District Court
Washington Western U.S. District Court
West Virginia Northern U.S. District Court
West Virginia Southern U.S. District Court
Wisconsin Eastern U.S. District Court
Wisconsin Western U.S. District Court
Wyoming U.S. District Court
Louisiana U.S. District Court
Washington U.S. District Court
West Virginia U.S. District Court
Illinois Eastern U.S. District Court
South Carolina Eastern U.S. District Court
South Carolina Western U.S. District Court
Alabama U.S. District Court
U.S. District Court for the Canal Zone
Georgia U.S. District Court
Illinois U.S. District Court
Indiana U.S. District Court
Iowa U.S. District Court
Michigan U.S. District Court
Mississippi U.S. District Court
Missouri U.S. District Court
New Jersey Eastern U.S. District Court (East Jersey U.S. District Court)
New Jersey Western U.S. District Court (West Jersey U.S. District Court)
New York U.S. District Court
North Carolina U.S. District Court
Ohio U.S. District Court
Pennsylvania U.S. District Court
Tennessee U.S. District Court
Texas U.S. District Court
Virginia U.S. District Court
Norfolk U.S. District Court
Wisconsin U.S. District Court
Kentucky U.S. Distrcrict Court
New Jersey U.S. District Court
California U.S. District Court
Florida U.S. District Court
Arkansas U.S. District Court
District of Orleans U.S. District Court
State Supreme Court
State Appellate Court
State Trial Court
Eastern Circuit (of the United States)
Middle Circuit (of the United States)
Southern Circuit (of the United States)
Alabama U.S. Circuit Court for (all) District(s) of Alabama
Arkansas U.S. Circuit Court for (all) District(s) of Arkansas
California U.S. Circuit for (all) District(s) of California
Connecticut U.S. Circuit for the District of Connecticut
Delaware U.S. Circuit for the District of Delaware
Florida U.S. Circuit for (all) District(s) of Florida
Georgia U.S. Circuit for (all) District(s) of Georgia
Illinois U.S. Circuit for (all) District(s) of Illinois
Indiana U.S. Circuit for (all) District(s) of Indiana
Iowa U.S. Circuit for (all) District(s) of Iowa
Kansas U.S. Circuit for the District of Kansas
Kentucky U.S. Circuit for (all) District(s) of Kentucky
Louisiana U.S. Circuit for (all) District(s) of Louisiana
Maine U.S. Circuit for the District of Maine
Maryland U.S. Circuit for the District of Maryland
Massachusetts U.S. Circuit for the District of Massachusetts
Michigan U.S. Circuit for (all) District(s) of Michigan
Minnesota U.S. Circuit for the District of Minnesota
Mississippi U.S. Circuit for (all) District(s) of Mississippi
Missouri U.S. Circuit for (all) District(s) of Missouri
Nevada U.S. Circuit for the District of Nevada
New Hampshire U.S. Circuit for the District of New Hampshire
New Jersey U.S. Circuit for (all) District(s) of New Jersey
New York U.S. Circuit for (all) District(s) of New York
North Carolina U.S. Circuit for (all) District(s) of North Carolina
Ohio U.S. Circuit for (all) District(s) of Ohio
Oregon U.S. Circuit for the District of Oregon
Pennsylvania U.S. Circuit for (all) District(s) of Pennsylvania
Rhode Island U.S. Circuit for the District of Rhode Island
South Carolina U.S. Circuit for the District of South Carolina
Tennessee U.S. Circuit for (all) District(s) of Tennessee
Texas U.S. Circuit for (all) District(s) of Texas
Vermont U.S. Circuit for the District of Vermont
Virginia U.S. Circuit for (all) District(s) of Virginia
West Virginia U.S. Circuit for (all) District(s) of West Virginia
Wisconsin U.S. Circuit for (all) District(s) of Wisconsin
Wyoming U.S. Circuit for the District of Wyoming
Circuit Court of the District of Columbia
Nebraska U.S. Circuit for the District of Nebraska
Colorado U.S. Circuit for the District of Colorado
Washington U.S. Circuit for (all) District(s) of Washington
Idaho U.S. Circuit Court for (all) District(s) of Idaho
Montana U.S. Circuit Court for (all) District(s) of Montana
Utah U.S. Circuit

Answer: 42