Task: sc_issue_1

What follows is an opinion from the Supreme Court of the United States. Your task is to determine the issue of the Court's decision. Determine the issue of the case on the basis of the Court's own statements as to what the case is about. Focus on the subject matter of the controversy rather than its legal basis.

Mr. Justice Powell
delivered the opinion of the Court.
Border Patrol officers stopped respondent’s car for a routine immigration search at the traffic checkpoint' on Interstate Highway 5 at San Clemente, Cal., on November 12, 1973. They found three aliens concealed in the trunk, and respondent was convicted on three counts of knowingly transporting aliens who were in the country illegally. The Court of Appeals for the Ninth Circuit reversed the conviction in an unreported opinion, relying on dictum in its opinion in United States v. Bowen, 500 F. 2d 960 (CA9 1974), aff’d, post, p. 916, to the effect that our decision in Almeida-Sanchez v. United States, 413 U. S. 266 (1973), required probable cause for all vehicle searches in the border area, whether conducted by roving patrols or at traffic checkpoints. We granted certiorari. 419 U. S. 824 (1974).
Nothing in this record suggests that the Border Patrol officers had any special reason to suspect that respondent’s car was carrying concealed aliens. Nor does the Government contend that the San Clemente checkpoint is a functional equivalent of the border. Brief for United States 16. The only question for decision is whether vehicle searches at traffic checkpoints, like the roving-patrol search in Almeida-Sanchez, must be based on probable cause.
I
In Almeida-Sanchez we rejected the Government’s contention that the Nation’s strong interest in controlling immigration and the practical difficulties of policing the Mexican border combined to justify dispensing with both warrant and probable cause for vehicle searches by roving patrols near the border. The facts did not require us to decide whether the same rule would apply to traffic checkpoints, which differ from roving patrols in several important respects. 413 U. S., at 273; id., at 276 (Powell, J., concurring).
A consolidated proceeding on motions to suppress in this and similar cases produced an extensive factual record on the operation of traffic checkpoints in southern California. United States v. Baca, 368 F. Supp. 398 (SD Cal. 1973). The San Clemente checkpoint is 62 air miles and 66 road miles north of the Mexican border. It is on the principal highway between San Diego and Los Angeles, and over 10 million vehicles pass the checkpoint in a year. United States v. Martinez-Fuerte, 514 F. 2d 308, 312 (CA9 1975). The District Court in Baca described the checkpoint as follows:
“Approximately one mile south of the checkpoint is a large black on yellow sign with flashing yellow lights over the highway stating ‘ALL VEHICLES, STOP AHEAD, 1 MILE.’ Three-quarters of a mile further north are two black on yellow signs suspended over the highway with flashing lights stating ‘WATCH FOR BRAKE LIGHTS.' At the checkpoint, which is also the location of a State of California weighing station, are two large signs with flashing red lights suspended over the highway. These signs each state ‘STOP HERE — U. S. OFFICERS.' Placed on the highway are a number of orange traffic cones tunneling traffic into two lanes where a Border Patrol agent in full dress uniform, standing behind a white on red ‘STOP' sign checks traffic. Blocking traffic in the unused lanes are official U. S. Border Patrol vehicles with flashing red lights. In addition, there is a permanent building which houses the Border Patrol office and temporary detention facilities. There are also floodlights for nighttime operation.” 368 F. Supp., at 410-411.
The Border Patrol would prefer to keep this checkpoint in operation continuously, but bad weather, heavy traffic, and personnel shortages keep it closed about one-third of the time. When it is open, officers screen all northbound traffic. If anything about a vehicle or its occupants leads an officer to suspect that it may be carrying aliens, he will stop the car and ask the occupants about their citizenship. If the officer’s suspicion persists, or if the questioning enhances it, he will “inspect” portions of the car in which an alien might hide. Operations at other checkpoints are similar, although the traffic at some is light enough that officers can stop all vehicles for questioning and routinely inspect more of them.
The Government maintains that these characteristics justify dispensing with probable cause at traffic checkpoints despite the' Court’s holding in Almeida-Sanchez. It gives essentially two reasons for distinguishing that case. First, a checkpoint officer’s discretion in deciding which cars to search is limited by the location of the checkpoint. That location is determined by high-level Border Patrol officials, using criteria that include the degree of inconvenience to the public and the potential for safe operation, as well as the potential for detecting and deterring the illegal movement of aliens. By contrast, officers on roving patrol were theoretically free before Almeida-Sanchez to stop and search any car within 100 miles of the border. Second, the circumstances surrounding a checkpoint stop and search are far less intrusive than those attending a roving-patrol stop. Roving patrols often operate at night on seldom-traveled roads, and their approach may frighten motorists. At traffic checkpoints the motorist can see that other vehicles are being stopped, he can see visible signs of the officers’ authority, and he is much less likely to be frightened or annoyed by the intrusion.
These differences are relevant to the constitutional issue, since the central concern of the Fourth Amendment is to protect liberty and privacy from arbitrary and oppressive interference by government officials. Camara v. Municipal Court, 387 U. S. 523, 528 (1967); Schmerber v. California, 384 U. S. 757, 767 (1966). The Fourth Amendment’s requirement that searches and seizures be reasonable also may limit police use of unnecessarily frightening or offensive methods of surveillance and investigation. See, e. g., Terry v. Ohio, 392 U. S. 1, 16-17 (1968); Camara, supra, at 531; Schmerber, supra, at 771-772. While the differences between a roving patrol and a checkpoint would be significant in determining the propriety of the stop, which is considerably less intrusive than a search, Terry v. Ohio, supra, they do not appear to make any difference in the search itself. The greater regularity attending the stop does not mitigate the invasion of privacy that a search entails. Nor do checkpoint procedures significantly reduce the likelihood of embarrassment. Motorists whose cars are searched, unlike those who are only questioned, may not be reassured by seeing that the Border Patrol searches other cars as well. Where only a few are singled out for a search, as at San Clemente, motorists may find the searches especially offensive. See Note, Border Searches and the Fourth Amendment, 77 Yale L. J. 1007, 1012-1013 (1968).
Moreover, we are not persuaded that the checkpoint limits to any meaningful extent the officer’s discretion to select cars for search. The record in the consolidated proceeding indicates that only about 3% of the cars that pass the San Clemente checkpoint are stopped for either questioning or a search, 368 F. Supp., at 411. Throughout the system, fewer than 3% of the vehicles that passed through checkpoints in 1974 were searched, Brief for United States 29, and no checkpoint involved in Baca reported a search rate of more than 10% or 15%. 368 F. Supp., at 412-415. It is apparent from these figures that checkpoint officers exercise a substantial degree of discretion in deciding which cars to search. The Government maintains that they voluntarily exercise that discretion with restraint and search only vehicles that arouse their suspicion, and it insists the officers should be free of judicial oversight of any kind. Viewed realistically, this position would authorize the Border Patrol to search vehicles at random, for no officer ever would have to justify his decision to search a particular car.
This degree of discretion to search private automobiles is not consistent with the Fourth Amendment. A search, even of an automobile, is a substantial invasion of privacy. To protect that privacy from official arbitrariness, the Court always has regarded probable cause as the minimum requirement for a lawful search. Almeida-Sanchez, 413 U. S., at 269-270; Chambers v. Maroney, 399 U. S. 42, 51 (1970). We are not persuaded that the differences between roving patrols and traffic checkpoints justify dispensing in this case with the safeguards we required in Almeida-Sanchez. We therefore follow that decision and hold that at traffic checkpoints removed from the border and its functional equivalents, officers may not search private vehicles without consent or probable cause.
The Government lists in its reply brief some of the factors on which officers have relied in deciding which cars to search. They include the number of persons in a vehicle, the appearance and behavior of the driver and passengers, their inability to speak English, the responses they give to officers’ questions, the nature of the vehicle, and indications that it may be heavily loaded. All of these factors properly may be taken into account in deciding whether there is probable cause to search a particular vehicle. In addition, as we note today in United States v. Brignoni-Ponce, ante, at 884-885, the officers are entitled to draw reasonable inferences from these facts in light of their knowledge of the area and their prior experience with aliens and smugglers. In this case, however, the officers advanced no special reasons for believing respondent’s vehicle contained aliens. The absence of probable cause makes the search invalid.
II
The Government also contends that even if AlmeidaSanchez applies to checkpoint searches, the Court of Appeals erred in voiding this search because it occurred after the date of decision in Almeida-Sanchez but before the Court of Appeals stated in United States v. Bowen, supra, that it would require probable cause for checkpoint searches. Examination of the Government’s brief in the Ninth Circuit indicates that it did not raise this question below. On the contrary, it represented to the court that the decision in Bowen would be “determinative of the issues in this case.” We therefore decline to consider this issue, which was raised for the first time in the petition for certiorari.
Affirmed.
Such places typically include the trunk, under the hood, and beneath the chassis. If the vehicle is a truck, a camper, or the like, the officer inspects the enclosed portion as well. But an immigration inspection is not always so confined. In Almeida-Sanchez v. United States, 413 U. S. 266 (1973), the officer removed the back seat cushion because there were reports that aliens had been found seated upright behind seats from which the springs had been removed. Id., at 286 (White, J., dissenting).
The degree of the invasion of privacy in an automobile search may vary with the circumstances, as there are significant differences between “an automobile and a home or office.” Chambers v. Maroney, 399 U. S. 42, 48 (1970); Almeida-Sanchez v. United States, 413 U. S., at 279 (Powell, J., concurring).
Not every aspect of a routine automobile “inspection,” as described in n. 1, supra, necessarily constitutes a “search” for purposes of the Fourth Amendment. There is no occasion in this case to define the exact limits of an automobile “search.”
Nor do we have occasion to decide whether a warrant could issue approving checkpoint searches based on information about the area as a whole, in the absence of cause to believe that a particular car is carrying concealed aliens, because the officers had no such warrant in this case and had not tried to obtain one. See Almeida-Sanchez v. United States, supra, at 275 (Powell, J., concurring); Camara v. Municipal Court, 387 U. S. 523 (1967). We also need not decide whether checkpoints and roving patrols must be treated the same for all purposes, or whether Border Patrol officers may lawfully stop motorists for questioning at an established checkpoint without reason to believe that a particular vehicle is carrying aliens. Cf. United States v. Brignoni-Ponce, ante, p. 873. Nor do we suggest that probable cause would be required for all inspections of private motor vehicles. It is quite possible, for example, that different considerations would apply to routine safety inspections required as a condition of road use.

Question: What is the issue of the decision?
年. involuntary confession
数. habeas corpus
日. plea bargaining: the constitutionality of and/or the circumstances of its exercise
的. retroactivity (of newly announced or newly enacted constitutional or statutory rights)
月. search and seizure (other than as pertains to vehicles or Crime Control Act)
用. search and seizure, vehicles
成. search and seizure, Crime Control Act
名. contempt of court or congress
时. self-incrimination (other than as pertains to Miranda or immunity from prosecution)
件. Miranda warnings
一. self-incrimination, immunity from prosecution
请. right to counsel (cf. indigents appointment of counsel or inadequate representation)
中. cruel and unusual punishment, death penalty (cf. extra legal jury influence, death penalty)
据. cruel and unusual punishment, non-death penalty (cf. liability, civil rights acts)
码. line-up
不. discovery and inspection (in the context of criminal litigation only, otherwise Freedom of Information Act and related federal or state statutes or regulations)
新. double jeopardy
文. ex post facto (state)
下. extra-legal jury influences: miscellaneous
分. extra-legal jury influences: prejudicial statements or evidence
入. extra-legal jury influences: contact with jurors outside courtroom
人. extra-legal jury influences: jury instructions (not necessarily in criminal cases)
功. extra-legal jury influences: voir dire (not necessarily a criminal case)
上. extra-legal jury influences: prison garb or appearance
户. extra-legal jury influences: jurors and death penalty (cf. cruel and unusual punishment)
为. extra-legal jury influences: pretrial publicity
间. confrontation (right to confront accuser, call and cross-examine witnesses)
号. subconstitutional fair procedure: confession of error
取. subconstitutional fair procedure: conspiracy (cf. Federal Rules of Criminal Procedure: conspiracy)
回. subconstitutional fair procedure: entrapment
在. subconstitutional fair procedure: exhaustion of remedies
页. subconstitutional fair procedure: fugitive from justice
字. subconstitutional fair procedure: presentation, admissibility, or sufficiency of evidence (not necessarily a criminal case)
有. subconstitutional fair procedure: stay of execution
个. subconstitutional fair procedure: timeliness
作. subconstitutional fair procedure: miscellaneous
示. Federal Rules of Criminal Procedure
出. statutory construction of criminal laws: assault
是. statutory construction of criminal laws: bank robbery
失. statutory construction of criminal laws: conspiracy (cf. subconstitutional fair procedure: conspiracy)
表. statutory construction of criminal laws: escape from custody
除. statutory construction of criminal laws: false statements (cf. statutory construction of criminal laws: perjury)
加. statutory construction of criminal laws: financial (other than in fraud or internal revenue)
败. statutory construction of criminal laws: firearms
生. statutory construction of criminal laws: fraud
信. statutory construction of criminal laws: gambling
类. statutory construction of criminal laws: Hobbs Act; i.e., 18 USC 1951
置. statutory construction of criminal laws: immigration (cf. immigration and naturalization)
理. statutory construction of criminal laws: internal revenue (cf. Federal Taxation)
本. statutory construction of criminal laws: Mann Act and related statutes
息. statutory construction of criminal laws: narcotics includes regulation and prohibition of alcohol
行. statutory construction of criminal laws: obstruction of justice
定. statutory construction of criminal laws: perjury (other than as pertains to statutory construction of criminal laws: false statements)
改. statutory construction of criminal laws: Travel Act, 18 USC 1952
市. statutory construction of criminal laws: war crimes
期. statutory construction of criminal laws: sentencing guidelines
以. statutory construction of criminal laws: miscellaneous
修. jury trial (right to, as distinct from extra-legal jury influences)
元. speedy trial
方. miscellaneous criminal procedure (cf. due process, prisoners' rights, comity: criminal procedure)
录. voting
区. Voting Rights Act of 1965, plus amendments
单. ballot access (of candidates and political parties)
位. desegregation (other than as pertains to school desegregation, employment discrimination, and affirmative action)
型. desegregation, schools
法. employment discrimination: on basis of race, age, religion, illegitimacy, national origin, or working conditions.
县. affirmative action
存. slavery or indenture
品. sit-in demonstrations (protests against racial discrimination in places of public accommodation)
前. reapportionment: other than plans governed by the Voting Rights Act
称. debtors' rights
注. deportation (cf. immigration and naturalization)
值. employability of aliens (cf. immigration and naturalization)
输. sex discrimination (excluding sex discrimination in employment)
建. sex discrimination in employment (cf. sex discrimination)
能. Indians (other than pertains to state jurisdiction over)
大. Indians, state jurisdiction over
例. juveniles (cf. rights of illegitimates)
度. poverty law, constitutional
始. poverty law, statutory: welfare benefits, typically under some Social Security Act provision.
到. illegitimates, rights of (cf. juveniles): typically inheritance and survivor's benefits, and paternity suits
面. handicapped, rights of: under Rehabilitation, Americans with Disabilities Act, and related statutes
载. residency requirements: durational, plus discrimination against nonresidents
点. military: draftee, or person subject to induction
密. military: active duty
动. military: veteran
果. immigration and naturalization: permanent residence
图. immigration and naturalization: citizenship
提. immigration and naturalization: loss of citizenship, denaturalization
发. immigration and naturalization: access to public education
式. immigration and naturalization: welfare benefits
国. immigration and naturalization: miscellaneous
登. indigents: appointment of counsel (cf. right to counsel)
错. indigents: inadequate representation by counsel (cf. right to counsel)
者. indigents: payment of fine
认. indigents: costs or filing fees
误. indigents: U.S. Supreme Court docketing fee
接. indigents: transcript
关. indigents: assistance of psychiatrist
重. indigents: miscellaneous
第. liability, civil rights acts (cf. liability, governmental and liability, nongovernmental; cruel and unusual punishment, non-death penalty)
地. miscellaneous civil rights (cf. comity: civil rights)
如. First Amendment, miscellaneous (cf. comity: First Amendment)
设. commercial speech, excluding attorneys
目. libel, defamation: defamation of public officials and public and private persons
开. libel, privacy: true and false light invasions of privacy
事. legislative investigations: concerning internal security only
可. federal or state internal security legislation: Smith, Internal Security, and related federal statutes
要. loyalty oath or non-Communist affidavit (other than bar applicants, government employees, political party, or teacher)
代. loyalty oath: bar applicants (cf. admission to bar, state or federal or U.S. Supreme Court)
小. loyalty oath: government employees
选. loyalty oath: political party
标. loyalty oath: teachers
明. security risks: denial of benefits or dismissal of employees for reasons other than failure to meet loyalty oath requirements
编. conscientious objectors (cf. military draftee or military active duty) to military service
求. campaign spending (cf. governmental corruption):
列. protest demonstrations (other than as pertains to sit-in demonstrations): demonstrations and other forms of protest based on First Amendment guarantees
网. free exercise of religion
万. establishment of religion (other than as pertains to parochiaid:)
最. parochiaid: government aid to religious schools, or religious requirements in public schools
器. obscenity, state (cf. comity: privacy): including the regulation of sexually explicit material under the 21st Amendment
所. obscenity, federal
内. due process: miscellaneous (cf. loyalty oath), the residual code
体. due process: hearing or notice (other than as pertains to government employees or prisoners' rights)
通. due process: hearing, government employees
务. due process: prisoners' rights and defendants' rights
此. due process: impartial decision maker
商. due process: jurisdiction (jurisdiction over non-resident litigants)
序. due process: takings clause, or other non-constitutional governmental taking of property
化. privacy (cf. libel, comity: privacy)
消. abortion: including contraceptives
否. right to die
保. Freedom of Information Act and related federal or state statutes or regulations
使. attorneys' and governmental employees' or officials' fees or compensation or licenses
次. commercial speech, attorneys (cf. commercial speech)
机. admission to a state or federal bar, disbarment, and attorney discipline (cf. loyalty oath: bar applicants)
对. admission to, or disbarment from, Bar of the U.S. Supreme Court
量. arbitration (in the context of labor-management or employer-employee relations) (cf. arbitration)
查. union antitrust: legality of anticompetitive union activity
部. union or closed shop: includes agency shop litigation
性. Fair Labor Standards Act
和. Occupational Safety and Health Act
更. union-union member dispute (except as pertains to union or closed shop)
后. labor-management disputes: bargaining
证. labor-management disputes: employee discharge
题. labor-management disputes: distribution of union literature
确. labor-management disputes: representative election
格. labor-management disputes: antistrike injunction
了. labor-management disputes: jurisdictional dispute
于. labor-management disputes: right to organize
金. labor-management disputes: picketing
公. labor-management disputes: secondary activity
午. labor-management disputes: no-strike clause
円. labor-management disputes: union representatives
片. labor-management disputes: union trust funds (cf. ERISA)
空. labor-management disputes: working conditions
态. labor-management disputes: miscellaneous dispute
管. miscellaneous union
主. antitrust (except in the context of mergers and union antitrust)
天. mergers
自. bankruptcy (except in the context of priority of federal fiscal claims)
我. sufficiency of evidence: typically in the context of a jury's determination of compensation for injury or death
全. election of remedies: legal remedies available to injured persons or things
今. liability, governmental: tort or contract actions by or against government or governmental officials other than defense of criminal actions brought under a civil rights action.
来. liability, other than as in sufficiency of evidence, election of remedies, punitive damages
正. liability, punitive damages
说. Employee Retirement Income Security Act (cf. union trust funds)
意. state or local government tax
送. state and territorial land claims
容. state or local government regulation, especially of business (cf. federal pre-emption of state court jurisdiction, federal pre-emption of state legislation or regulation)
已. federal or state regulation of securities
结. natural resources - environmental protection (cf. national supremacy: natural resources, national supremacy: pollution)
会. corruption, governmental or governmental regulation of other than as in campaign spending
段. zoning: constitutionality of such ordinances, or restrictions on owners' or lessors' use of real property
计. arbitration (other than as pertains to labor-management or employer-employee relations (cf. union arbitration)
源. federal or state consumer protection: typically under the Truth in Lending; Food, Drug and Cosmetic; and Consumer Protection Credit Acts
色. patents and copyrights: patent
時. patents and copyrights: copyright
交. patents and copyrights: trademark
系. patents and copyrights: patentability of computer processes
过. federal or state regulation of transportation regulation: railroad
电. federal and some few state regulations of transportation regulation: boat
询. federal and some few state regulation of transportation regulation:truck, or motor carrier
符. federal and some few state regulation of transportation regulation: pipeline (cf. federal public utilities regulation: gas pipeline)
未. federal and some few state regulation of transportation regulation: airline
程. federal and some few state regulation of public utilities regulation: electric power
常. federal and some few state regulation of public utilities regulation: nuclear power
条. federal and some few state regulation of public utilities regulation: oil producer
当. federal and some few state regulation of public utilities regulation: gas producer
情. federal and some few state regulation of public utilities regulation: gas pipeline (cf. federal transportation regulation: pipeline)
口. federal and some few state regulation of public utilities regulation: radio and television (cf. cable television)
合. federal and some few state regulation of public utilities regulation: cable television (cf. radio and television)
车. federal and some few state regulations of public utilities regulation: telephone or telegraph company
实. miscellaneous economic regulation
组. comity: civil rights
版. comity: criminal procedure
周. comity: First Amendment
址. comity: habeas corpus
记. comity: military
二. comity: obscenity
同. comity: privacy
业. comity: miscellaneous
权. comity primarily removal cases, civil procedure (cf. comity, criminal and First Amendment); deference to foreign judicial tribunals
其. assessment of costs or damages: as part of a court order
进. Federal Rules of Civil Procedure including Supreme Court Rules, application of the Federal Rules of Evidence, Federal Rules of Appellate Procedure in civil litigation, Circuit Court Rules, and state rules and admiralty rules
试. judicial review of administrative agency's or administrative official's actions and procedures
验. mootness (cf. standing to sue: live dispute)
料. venue
传. no merits: writ improvidently granted
述. no merits: dismissed or affirmed for want of a substantial or properly presented federal question, or a nonsuit
集. no merits: dismissed or affirmed for want of jurisdiction (cf. judicial administration: Supreme Court jurisdiction or authority on appeal from federal district courts or courts of appeals)
多. no merits: adequate non-federal grounds for decision
无. no merits: remand to determine basis of state or federal court decision (cf. judicial administration: state law)
员. no merits: miscellaneous
报. standing to sue: adversary parties
他. standing to sue: direct injury
無. standing to sue: legal injury
服. standing to sue: personal injury
线. standing to sue: justiciable question
这. standing to sue: live dispute
制. standing to sue: parens patriae standing
将. standing to sue: statutory standing
处. standing to sue: private or implied cause of action
高. standing to sue: taxpayer's suit
子. standing to sue: miscellaneous
道. judicial administration: jurisdiction or authority of federal district courts or territorial courts
章. judicial administration: jurisdiction or authority of federal courts of appeals
手. judicial administration: Supreme Court jurisdiction or authority on appeal or writ of error, from federal district courts or courts of appeals (cf. 753)
库. judicial administration: Supreme Court jurisdiction or authority on appeal or writ of error, from highest state court
三. judicial administration: jurisdiction or authority of the Court of Claims
从. judicial administration: Supreme Court's original jurisdiction
支. judicial administration: review of non-final order
家. judicial administration: change in state law (cf. no merits: remand to determine basis of state court decision)
长. judicial administration: federal question (cf. no merits: dismissed for want of a substantial or properly presented federal question)
付. judicial administration: ancillary or pendent jurisdiction
秒. judicial administration: extraordinary relief (e.g., mandamus, injunction)
路. judicial administration: certification (cf. objection to reason for denial of certiorari or appeal)
完. judicial administration: resolution of circuit conflict, or conflict between or among other courts
象. judicial administration: objection to reason for denial of certiorari or appeal
则. judicial administration: collateral estoppel or res judicata
现. judicial administration: interpleader
京. judicial administration: untimely filing
转. judicial administration: Act of State doctrine
辑. judicial administration: miscellaneous
限. Supreme Court's certiorari, writ of error, or appeals jurisdiction
力. miscellaneous judicial power, especially diversity jurisdiction
学. federal-state ownership dispute (cf. Submerged Lands Act)
外. federal pre-emption of state court jurisdiction
调. federal pre-emption of state legislation or regulation. cf. state regulation of business. rarely involves union activity. Does not involve constitutional interpretation unless the Court says it does.
项. Submerged Lands Act (cf. federal-state ownership dispute)
北. national supremacy: commodities
工. national supremacy: intergovernmental tax immunity
笑. national supremacy: marital and family relationships and property, including obligation of child support
监. national supremacy: natural resources (cf. natural resources - environmental protection)
任. national supremacy: pollution, air or water (cf. natural resources - environmental protection)
相. national supremacy: public utilities (cf. federal public utilities regulation)
微. national supremacy: state tax (cf. state tax)
册. national supremacy: miscellaneous
联. miscellaneous federalism
平. boundary dispute between states
增. non-real property dispute between states
听. miscellaneous interstate relations conflict
解. incorporation of foreign territories
等. federal taxation, typically under provisions of the Internal Revenue Code
得. federal taxation of gifts, personal, business, or professional expenses
收. priority of federal fiscal claims: over those of the states or private entities
安. miscellaneous federal taxation (cf. national supremacy: state tax)
价. legislative veto
藏. executive authority vis-a-vis congress or the states
命. miscellaneous
应. real property
看. personal property
索. contracts
资. evidence
产. civil procedure
串. torts
布. wills and trusts
原. commercial transactions
Answer:

Answer: 用