What follows is an opinion from the Supreme Court of the United States. Your task is to identify the federal agency involved in the administrative action that occurred prior to the onset of litigation. If the administrative action occurred in a state agency, respond "State Agency". Do not code the name of the state. The administrative activity may involve an administrative official as well as that of an agency. If two federal agencies are mentioned, consider the one whose action more directly bears on the dispute;otherwise the agency that acted more recently. If a state and federal agency are mentioned, consider the federal agency. Pay particular attention to the material which appears in the summary of the case preceding the Court's opinion and, if necessary, those portions of the prevailing opinion headed by a I or II. Action by an agency official is considered to be administrative action except when such an official acts to enforce criminal law. If an agency or agency official "denies" a "request" that action be taken, such denials are considered agency action. Exclude: a "challenge" to an unapplied agency rule, regulation, etc.; a request for an injunction or a declaratory judgment against agency action which, though anticipated, has not yet occurred; a mere request for an agency to take action when there is no evidence that the agency did so; agency or official action to enforce criminal law; the hiring and firing of political appointees or the procedures whereby public officials are appointed to office; attorney general preclearance actions pertaining to voting; filing fees or nominating petitions required for access to the ballot; actions of courts martial; land condemnation suits and quiet title actions instituted in a court; and federally funded private nonprofit organizations.

Opinion:
UNITED STATES et al. v. CITY OF CHICAGO et al.
No. 386.
Decided October 19, 1970
Together with:. No. 387, United States et al. v. Tennessee Public Service Commission et al., No. 396, Louisville & Nashville Railroad Co. v. Tennessee Public Service Commission et al., and No. 410, Chicago & Eastern Illinois Railroad et al. v. City of Chicago et al., also on appeal from the same court.
Per Curiam.
These cases are a sequel to our decision in City of Chicago v. United States, 396 U. S. 162, last; Term. The Chicago & Eastern Illinois Railroad (C&EI) filed a notice under § 13a (1) of the Interstate Commerce Act, 72 Stat. 571, 49 U. S. C. .§ 13a (1), proposing to discontinue a pair of trains known as the “Georgian,” operated by it between Chicago, Illinois, and Evansville, Indiana, and operated in conjunction with trains of the Louisville & Nashville Railroad (L&N) between.Evansville, Indiana, and Atlanta, Georgia, crossing Kentucky and Tennessee en route.. Part of-this litigation grows out of the ICC’s approval of the C&EI’s discontinuance of the Chicago-Evansville segment of the “Georgian,” evidenced by its termination of its investigation.
The L&N also operates the “Hummingbird.” between Cincinnati, Ohio, and New Orleans, Louisiana. The “Hummingbird” connects with the “Georgian” at Nashville, Tennessee, where coaches and sleepers are transferred between the two trains. Following the ICC’s approval of C&EI’s discontinuance, the L&N served notice of discontinuance of the “Hummingbird” which the ICC also approved.
In City of Chicago v. United States, supra, we held that ICC decisions to discontinue such an investigation were reviewable and remanded the cases- back to the District Court. That court then ordered consolidation . and remanded back to the ICC for further hearings, holding that the notice served by the C&EI on the Governors of Illinois and Indiana and at every station along the Chicago-Evansville run was inadequate because the people of Kentucky, Tennessee, and Georgia, and the Governors of those States were not notified. The “Hummingbird” discontinuance was also remanded to the ICC because of its close relationship with the “Georgian.” These appeals followed.
We note jurisdiction and reverse. Section 13a (1) provides: .
“A carrier or carriers subject to this part, if their rights with respect to the - discontinuance or change ... of the operation or service of any train . . . are súbject to any provision of the constitution or statutes of any State . ; . shall mail to the Governor of each State in which such train . .. . operated, and post in every station, depot or other facility served thereby, notice ... of any such proposed discontinuance or change.”
This section, as we read it, required C&EI to give notice in Illinois and Indiana, the only- States in which the line now in controversy has operated. No provision is made in § 13a (1) for notice to States served by connecting railroads which might be affected by a discontinuance.
The dissent finds ambiguity in the phrase “such train” in § 13a (1). It is argued that two interpretations of “such train” are possible: either the train of the C&EI between Chicago and Evansville or the “Georgian” between Chicago and Atlanta. By allowing discontinuance under § 13a (1), however, the ICC must have interpreted “such train” to refer to a train operated by one railroad only; and it. was only the Chicago-Evansville discontinuance that was before it at the time. The Commission ruled that: “Copies of the notices were duly served and posted in the manner required by section 13a (1) and our rules and regulations thereunder.” 331 I. C. C. 447, 448. We defer on this issue to the definition of “train” given by the administrative agency which has oversight of the problem. See, e. g., Udall v. Tallman, 380 U. S. 1, 16-17; Bowles v. Seminole Rock Co., 325 U. S. 410, 417-418.
It is true that the C&EI and the L&-N functioned in close harmony. Discontinuance of service on one line might have a substantial effect on the other. But this relationship is not unique in railroading. Congress is not unaware of the mutual interdependence of railroads. It designed a federal regulatory system that displaced a state regulatory system when the state system could defeat a carrier’s attempt to discontinue a train. Hence we think it distorts § 13a (1) to treat if. so as to require the giving of notice to States which had no regulatory-power over the carrier.
Accordingly, the decisions in No's. 386 and 410 are reversed. Since Nos. 387 and 396 were remanded to the Commission solely because of their relation to Nos. 386 and 410, those decisions are also reversed. The causes aré remanded to the District Court for review of any questions on the merits which may remain unresolved. •
It is so ordered.
No issue as to the adequacy of the notice given in the L&N proceeding is raised here.
The regulation at the time provided for “[a] certificate [stating] that a copy of the notice * * * has been mailed to the Governor and railroad regulatory body of each State in which the subject train or ferry is operated.” (49 CFR § 143.5 (j),-formerly § 43.5 (j) (see 32 Fed. Reg. 5606)).
Until 1958 railroad discontinuances required approval of the appropriate regulatory agency in each of the States in which the line operated. Congress knew of the financial difficulties of the railroads and concluded that the problem of discontinuance had to be removed from its parochial setting where state agencies 'too often required the “maintenance of uneconomic and unnecessary services and facilities.” S. Rep. No. 1647, 85th Cong.,'2d Sess., 22. Therefore, Congress vested power over discontinuances in a body aware of the national transportation problems and needs. See generally City of Chicago v. United States, 396 U. S. 162 (1969), and Southern R. Co. v. North Carolina, 376 U. S. 93 (1964).
The problem of discontinuance of services as put to the Congress by the Association of American Railroads was described as follows: “[S]uch matters are subject to approval of State regulatory commissions and authority for. such discontinuances or abandonments must be obtained within the scope of statutes or procedures under which those State commissions operate.” Problems of the Railroads, Hearings before the Subcommittee on Surface Transportation of the Senate Committee on Interstate and Foreign Commerce, 85th Cong., 2d Sess., pt. 1, p. 25 (Jan. 13, 1958).
The legislation was responsive to that need and may not be easily construed to do more than track the jurisdiction of a' State over the carrier in question.

Question: What is the agency involved in the administrative action?

Choices:
Army and Air Force Exchange Service
Atomic Energy Commission
Secretary or administrative unit or personnel of the U.S. Air Force
Department or Secretary of Agriculture
Alien Property Custodian
Secretary or administrative unit or personnel of the U.S. Army
Board of Immigration Appeals
Bureau of Indian Affairs
Bureau of Prisons
Bonneville Power Administration
Benefits Review Board
Civil Aeronautics Board
Bureau of the Census
Central Intelligence Agency
Commodity Futures Trading Commission
Department or Secretary of Commerce
Comptroller of Currency
Consumer Product Safety Commission
Civil Rights Commission
Civil Service Commission, U.S.
Customs Service or Commissioner or Collector of Customs
Defense Base Closure and REalignment Commission
Drug Enforcement Agency
Department or Secretary of Defense (and Department or Secretary of War)
Department or Secretary of Energy
Department or Secretary of the Interior
Department of Justice or Attorney General
Department or Secretary of State
Department or Secretary of Transportation
Department or Secretary of Education
U.S. Employees' Compensation Commission, or Commissioner
Equal Employment Opportunity Commission
Environmental Protection Agency or Administrator
Federal Aviation Agency or Administration
Federal Bureau of Investigation or Director
Federal Bureau of Prisons
Farm Credit Administration
Federal Communications Commission (including a predecessor, Federal Radio Commission)
Federal Credit Union Administration
Food and Drug Administration
Federal Deposit Insurance Corporation
Federal Energy Administration
Federal Election Commission
Federal Energy Regulatory Commission
Federal Housing Administration
Federal Home Loan Bank Board
Federal Labor Relations Authority
Federal Maritime Board
Federal Maritime Commission
Farmers Home Administration
Federal Parole Board
Federal Power Commission
Federal Railroad Administration
Federal Reserve Board of Governors
Federal Reserve System
Federal Savings and Loan Insurance Corporation
Federal Trade Commission
Federal Works Administration, or Administrator
General Accounting Office
Comptroller General
General Services Administration
Department or Secretary of Health, Education and Welfare
Department or Secretary of Health and Human Services
Department or Secretary of Housing and Urban Development
Administrative agency established under an interstate compact (except for the MTC)
Interstate Commerce Commission
Indian Claims Commission
Immigration and Naturalization Service, or Director of, or District Director of, or Immigration and Naturalization Enforcement
Internal Revenue Service, Collector, Commissioner, or District Director of
Information Security Oversight Office
Department or Secretary of Labor
Loyalty Review Board
Legal Services Corporation
Merit Systems Protection Board
Multistate Tax Commission
National Aeronautics and Space Administration
Secretary or administrative unit or personnel of the U.S. Navy
National Credit Union Administration
National Endowment for the Arts
National Enforcement Commission
National Highway Traffic Safety Administration
National Labor Relations Board, or regional office or officer
National Mediation Board
National Railroad Adjustment Board
Nuclear Regulatory Commission
National Security Agency
Office of Economic Opportunity
Office of Management and Budget
Office of Price Administration, or Price Administrator
Office of Personnel Management
Occupational Safety and Health Administration
Occupational Safety and Health Review Commission
Office of Workers' Compensation Programs
Patent Office, or Commissioner of, or Board of Appeals of
Pay Board (established under the Economic Stabilization Act of 1970)
Pension Benefit Guaranty Corporation
U.S. Public Health Service
Postal Rate Commission
Provider Reimbursement Review Board
Renegotiation Board
Railroad Adjustment Board
Railroad Retirement Board
Subversive Activities Control Board
Small Business Administration
Securities and Exchange Commission
Social Security Administration or Commissioner
Selective Service System
Department or Secretary of the Treasury
Tennessee Valley Authority
United States Forest Service
United States Parole Commission
Postal Service and Post Office, or Postmaster General, or Postmaster
United States Sentencing Commission
Veterans' Administration or Board of Veterans' Appeals
War Production Board
Wage Stabilization Board
State Agency
Unidentifiable
Office of Thrift Supervision
Department of Homeland Security
Board of General Appraisers
Board of Tax Appeals
General Land Office or Commissioners
NO Admin Action
Processing Tax Board of Review

Answer: 65