preiser newkirk argued january decided june transferred without explanation hearing medium security maximum security prison new york involvement conflict among inmates concerning petition prisoners union former prison respondent brought suit petitioner prison officials seeking declaratory injunctive relief district granting relief part ruled transfer violated due process clause fourteenth amendment made without explanation respondent opportunity heard appeals affirmed modification holding inter alia suit mooted fact respondent returned medium security prison prior district ruling respondent later transferred minimum security prison soon eligible parole held light respondent return medium security prison later transfer minimum security prison suit present case controversy required art iii constitution moot must dismissed since original complaint reasonable expectation wrong repeated question presented fall within category harm capable repetition yet evading review pp vacated remanded burger delivered opinion brennan stewart white marshall blackmun powell rehnquist joined marshall filed concurring statement post douglas filed dissenting statement post hillel hoffman assistant attorney general new york argued cause petitioners brief louis lefkowitz attorney general samuel hirshowitz first assistant attorney general joel lewittes assistant attorney general daniel pochoda argued cause respondent brief william hellerstein marjorie mazen smith solicitor general bork acting assistant attorney general keeney deputy solicitor general frey joseph davies filed brief amicus curiae urging reversal barbara milstein alvin bronstein arpiar saunders jack greenberg stanley bass cary coen filed brief national prison project et al amici curiae urging affirmance chief justice burger delivered opinion respondent newkirk inmate new york prison system since conviction murder second degree initially confined ossining correctional facility subsequently attica correctional facility green correctional facility auburn correctional facility facilities maximum security institutions time respondent confined located different parts new york april nine years initial confinement transferred wallkill correctional facility medium security institution district appeals found seriously disputed wallkill facility unique advantages correctional institutions new york system fewer restrictions physical restraints well comprehensive rehabilitation program early petition aimed formation prisoners union circulated wallkill event produced vociferous controversy among prisoners tension among inmates according district stemmed part hostility existing prisoner representative committee toward union movement prison administration however forbid actively discourage circulation petition administrators however monitor level unrest within prison brought clash opinions petition june general meeting inmates petition discussed loudly contending factions meeting dispersed peacefully however without incidents violence respondent attend meeting previously signed proposed union constitution immediately prior meeting received petition fellow inmate signed passed along report prepared assistant deputy superintendent identified newkirk one inmates canvassing union charge violation regulations misconduct report including naming newkirk apparently based information officers given assistant deputy superintendent newkirk afforded opportunity give account following day june superintendent called central office department corrections arranged transfer several inmates including newkirk facilities within state corrections system transfer newkirk effected june summoned infirmary informed transferred newkirk transferred clinton correctional facility maximum security institution conditions general prison population clinton substantially different wallkill clinton cells locked access library recreational facilities limited rehabilitation programs less extensive newkirk requested assignment arrived clinton understood waiting list assigned residence superintendent clinton wage earned wallkill since newkirk family lived new york city miles wallkill miles clinton transfer clinton made visits family difficult newkirk three four prisoners transferred wallkill brought suit district southern district new york pursuant superintendent wallkill state commissioner correctional services requested declaratory judgment transfers violation constitution laws injunction ordering return wallkill expunging record transfer prohibiting future transfers without hearing district denied preliminary injunction set case trial accelerated basis prior commencement trial two plaintiffs released complaint dismissed insofar related trial another plaintiff released action dismissed well subsequently newkirk returned wallkill superintendent institution also memorandum placed respondent file explained nature transfer noted transfer disciplinary reasons bearing eligibility parole decisions committee district held transfer violated due process clause fourteenth amendment since made without explanation newkirk opportunity heard entered declaratory judgment required newkirk given explanation opportunity heard connection future transfer declared adverse parole action taken newkirk punishment administered transfer held newkirk informed scope permissible behavior wallkill circumstances warrant transfer another prison future time however refused prayer injunction future summary transfers persuaded threat transfer sufficiently great time newkirk butler supp concluded present posture case sufficiently delineated controversy merit adjudication nothing explanatory note included record transfer action adverse plaintiff whether reference parole discipline based information also denied request record transfer expunged file appeals affirmed judgment modification held prisoner suffers substantial loss result transfer entitled basic elements rudimentary due process notice opportunity heard whether transfer part formal disciplinary proceeding whether adverse parole consequences nothing formal disciplinary proceedings case appeals relied fact transfer changed newkirk living conditions job assignment training opportunities however although agreeing advance publication rules violation might result transfer serve salutary function avoiding misunderstanding resentment appeals concluded requiring prison officials draw rules place officials unnecessary straight jacket sic ibid therefore modified judgment district remove requirement order although specifically noting newkirk returned wallkill clinton appeals held suit moot since ven return remained subject new transfer time ibid furthermore despite district reliance goodfaith assurances prison officials transfer adverse effect newkirk parole possibility appeals concluded entitled judicial decree effect ibid granted petitioners petition writ certiorari presented following question whether prison inmate transferred within state medium security institution maximum security institution without imposition disciplinary punishment entitled due process clause fourteenth amendment notice reasons transfer opportunity heard granting petition however directed parties brief argue question mootness developments since original challenged transfer must read light newkirk transfer wallkill also later transfer decision appeals edgecombe correctional facility minimum security institution new york city newkirk eligible parole july exercise judicial power art iii constitution depends existence case controversy noted north carolina rice federal neither power render advisory opinions decide questions affect rights litigants case judgments must resolve real substantial controversy admitting specific relief decree conclusive character distinguished opinion advising law upon hypothetical state facts quoting aetna life ins haworth noted last term opinion justice brennan steffel thompson rule federal cases actual controversy must extant stages review merely time complaint filed see roe wade sec medical comm human rights munsingwear maryland casualty pacific noting difficulty fashioning precise test universal application determining whether request declaratory relief become moot held basically question case whether facts alleged circumstances show substantial controversy parties adverse legal interests sufficient immediacy reality warrant issuance declaratory judgment emphasis supplied class action newkirk sought damages noted supra ruling district newkirk transferred back wallkill months adverse action taken period notation made file expressly stating transfer bearing future determinations made board parole time allowance committee newkirk transferred noted minimum security facility new york city therefore clear correction authorities harbor animosity toward newkirk us ere voluntary cessation allegedly illegal conduct concentrated phosphate export leave defendant free return old ways grant newkirk original complaint reasonable expectation wrong repeated quoting aluminum america subjective fear newkirk might entertain transferred circumstances similar alleged complaint suffering adverse consequences result transfer indeed remote speculative hardly casts continuing brooding presence concerned super tire engineering mccorkle noted scrap pleadings must something ingenious academic exercise conceivable plaintiff must allege fact perceptibly harmed challenged agency action imagine circumstances affected agency action similarly always possibility new york authorities might disregard specific record notation transfer effect good time parole decisions regard newkirk speculative contingencies afford basis passing substantive issues newkirk us decide hall beals record events since challenged transfer hardly bears genuine claim injury possible injury sufficient immediacy reality warrant issuance declaratory judgment maryland casualty newkirk noted eligible parole within matter days see supra conclude question presented fall within category harm capable repetition yet evading review southern pacific terminal icc roe wade accordingly vacate judgment appeals remand case directions complaint dismissed district munsingwear ordered footnotes pet cert see rule tr oral arg brief respondent justice marshall concurring join opinion reason respondent file case class action result state new york releasing three named plaintiffs transferring respondent back wallkill district action finally lesser correctional facility appeals acted thereby made case moot