What follows is an opinion from the Supreme Court of the United States. Your task is to determine the bases on which the Supreme Court rested its decision with regard to the legal provision that the Court considered in the case. Consider "judicial review (national level)" if the majority determined the constitutionality of some action taken by some unit or official of the federal government, including an interstate compact. Consider "judicial review (state level)" if the majority determined the constitutionality of some action taken by some unit or official of a state or local government. Consider "statutory construction" for cases where the majority interpret a federal statute, treaty, or court rule; if the Court interprets a federal statute governing the powers or jurisdiction of a federal court; if the Court construes a state law as incompatible with a federal law; or if an administrative official interprets a federal statute. Do not consider "statutory construction" where an administrative agency or official acts "pursuant to" a statute, unless the Court interprets the statute to determine if administrative action is proper. Consider "interpretation of administrative regulation or rule, or executive order" if the majority treats federal administrative action in arriving at its decision.Consider "diversity jurisdiction" if the majority said in approximately so many words that under its diversity jurisdiction it is interpreting state law. Consider "federal common law" if the majority indicate that it used a judge-made "doctrine" or "rule; if the Court without more merely specifies the disposition the Court has made of the case and cites one or more of its own previously decided cases unless the citation is qualified by the word "see."; if the case concerns admiralty or maritime law, or some other aspect of the law of nations other than a treaty; if the case concerns the retroactive application of a constitutional provision or a previous decision of the Court; if the case concerns an exclusionary rule, the harmless error rule (though not the statute), the abstention doctrine, comity, res judicata, or collateral estoppel; or if the case concerns a "rule" or "doctrine" that is not specified as related to or connected with a constitutional or statutory provision. Consider "Supreme Court supervision of lower federal or state courts or original jurisdiction" otherwise (i.e., the residual code); for issues pertaining to non-statutorily based Judicial Power topics; for cases arising under the Court's original jurisdiction; in cases in which the Court denied or dismissed the petition for review or where the decision of a lower court is affirmed by a tie vote; or in workers' compensation litigation involving statutory interpretation and, in addition, a discussion of jury determination and/or the sufficiency of the evidence.

Opinion:
WASHINGTON, Petitioner
v.
UNITED STATES, et al.
No. 17-269.
Supreme Court of the United States
June 11, 2018.
Robert W. Ferguson, Attorney General, Noah G. Purcell, Solicitor General, Fronda C. Woods, Assistant Attorney General, Jay D. Geck, Anne E. Egeler, Deputy Solicitors General, Olympia, WA, for Petitioner.
Kevin P. Martin, Tucker DeVoe, Goodwin Procter LLP, Boston, MA, William M. Jay, Brian T. Burgess, Jaime A. Santos, Goodwin Procter LLP, Washington, DC, for Tribal Respondents.
Riyaz A. Kanji, Kanji & Katzen, PLLC, Ann Arbor, MI, John C. Sledd, Jane G. Steadman, Kanji & Katzen, PLLC, Seattle, WA, for Respondents the Hoh Tribe, the Jamestown, S'Klallam Tribe, the Lower Elwha Klallam Tribe, the Nisqually Tribe, the Port Gamble S'Klallam, Tribe, the Sauk-Suiattle Tribe, the Squaxin Island Tribe, the Stillaguamish Tribe, and the Suquamish Tribe.
Mary Neil, Office of The Reservation Attorney, Lummi Nation, Bellingham, WA, James R. Sigel, Morrison & Foerster LLP, San Francisco, CA, Deanne E. Maynard, Brian R. Matsui, Morrison & Foerster LLP, Washington, DC, for Respondent the Lummi Nation.
Thomas Zeilman, Law Offices of Thomas Zeilman, Yakima, WA, for Respondent the Confederated Tribes, and Bands of the Yakama Nation.
Craig Dorsay, Lea Ann Easton, Dorsay & Easton, LLP, Portland, OR, for Respondent the Hoh Tribe.
Brian Gruber, Ziontz Chestnut, Seattle, WA, for Respondent the Makah Tribe.
Alan C. Stay, Ann E. Tweedy, Muckleshoot Indian Tribe, Office of The Tribal Attorney, Auburn, WA, for Respondent the Muckleshoot Tribe.
Maryanne Mohan, Office of The Tribal Attorney, Nisqually Indian Tribe, Olympia, WA, for Respondent the Nisqually Tribe.
Lauren Rasmussen, Law Offices of Lauren P. Rasmussen, PLLC, Seattle, WA, for Respondents the Jamestown S'Klallam Tribe and the Port Gamble, S'Klallam Tribe.
Steve Suagee, Sam Hough, Tribal Attorneys' Office, Lower Elwha, Klallam Tribe, Port Angeles, WA, for Respondent the Lower Elwha, Klallam Tribe.
Connie Sue Martin, Schwabe, Williamson & Wyatt, Seattle, WA, for Respondent the Nooksack Tribe.
Eric Nielsen, Nielsen, Broman & Koch, PLLC, Seattle, WA, for Respondent the Quinault Indian Nation.
Earle David Lees, Tribal Attorney, Skokomish Indian Tribe, Skokomish Nation, WA, for Respondent the Skokomish Tribe.
Kevin R. Lyon, Squaxin Island, Legal Department, Shelton, WA, for Respondent the Squaxin Island Tribe.
Samuel J. Stiltner, John Howard Bell, Tribal Attorneys, Puyallup Indian Tribe, Tacoma, WA, Harry R. Sachse, Sonosky, Chambers, Sachse, Endreson & Perry LLP, Washington, DC, for Respondent the Puyallup Tribe.
Timothy J. Filer, Foster Pepper PLLC, Seattle, WA, for Respondent the Quileute Tribe.
Scott Owen Mannakee, Tribal Attorney, Stillaguamish Tribe of Indians, Arlington, WA, for Respondent the Stillaguamish Tribe of Indians.
David Hawkins, Office of The Tribal Attorney, Upper Skagit Indian Tribe, Sedro Wooley, WA, for respondent the Upper Skagit Indian Tribe.
Arthur W. Harrigan, Jr., Tyler L. Farmer, Kristin Ballinger, Danielson Harrigan, Leyh & Tollefson, LLP, Seattle, WA, for respondent the Upper Skagit Tribe.
James Rittenhouse Bellis, Suquamish Tribe Legal Department, Suquamish Tribe, Suquamish, WA, for Respondent the Suquamish Tribe.
Emily Hutchinson Haley, Tribal Attorney, Swinomish Indian Tribal Community, La Conner, WA, for Respondent the Swinomish Indian Tribal Community.
Mason D. Morisset, Morisset, Schlosser, Jozwiak & Somerville, Seattle, WA, for Respondent the Tulalip Tribes.
Noel J. Francisco, Solicitor General, Jeffrey H. Wood, Acting Assistant Attorney General, Edwin S. Kneedler, Deputy Assistant Attorney General, Allon Kedem, Assistant to the Solicitor General, William B. Lazarus, Vanessa Boyd Willard, Evelyn S. Ying, Attorneys, Department of Justice, Washington, DC, for the United States.
PER CURIAM.
The judgment is affirmed by an equally divided Court.
Justice KENNEDY took no part in the decision of this case.

Question: What is the basis of the Supreme Court's decision?

Choices:
judicial review (national level)
judicial review (state level)
Supreme Court supervision of lower federal or state courts or original jurisdiction
statutory construction
interpretation of administrative regulation or rule, or executive order
diversity jurisdiction
federal common law

Answer: 3