题目内容：
根据以下材料，回答题Ouranalysisthereforesuggeststhattherealproblemfacingtheblackcommunityliesintheed-ucationalobstaclespriortothePh.D.programsratherthaninthepour-inofforeignstudents.E-qually,ouranalysissuggeststhatweoughttotreatforeignstudentsasanimportantSourceofbraingainforusandthatweoughttofacilitate,ratherthanhinder,theirarrivalandtheirentryintoourworkforce.Howcouldthisbedone?
Thereisalong-standingprovisioninourimmigrationlawsunderwhichthosewhobringinacertainamountoffinancialcapital(whichwill"createjobs")areallowedtoimmigrate:Aforeign-erwhoinvestsonemilliondollarsinacommercialenterpriseestablishedinahigh-unemploymentarea,whichcreatesjobsforatleasttenAmericans,isautomaticallygivenimmigrantstatus(i.e.,agreencard).Wesuggestextendingtheideafromfinancialtohumancapital.
Currently,graduatestudentswhowishtostayonintheUnitedStatesaftertheirPh.D.smustbesponSoredbytheiremployers,aprocessthatimposessubstantialhardshipbothonthestudentsandonsmalleremployers.
Thestandardprocedureisintwostages.First,theU.S.DepartmentofLabormust,onthebasisofaU.S.employer'ssponSorship,certifythat"noAmericancandothisjob."Then,thewould-beimmigrantmustapplyforimmigrantstatusattheImmigrationandNaturalizationService(INS).Ifallgoesright,theentireprocesstakesabouttwoyears(considerablymoreforci.tizensofcertaincountries).Butthingsmaynotgoright:therecouldbeproblemsateitherstage.Thus,theemployerorthe"alien"musthireanimmigrationlawyer.Thecurrentprocess,then,iscostlybothtothewould-beimmigrantandtotheemployer(andhence,itunfairlypenalizessmallerfirmsthatcannotaffordthisexpensiveprocessandSocannotrecruitthisforeigntalent).
TheImmigrationandNaturalizationActof1990introducedanalternativerouteforprofesSorsandresearcherstosecureimmigrantstatus.Essentially,iteliminatestheaverageprocessingtimetoaboutoneyear,itdoesnoteliminateanyoftheuncertaintyortheneedforexpensivelegalc.ounsel.WebudgetthatautomaticgreencardsbegiventoallthosewhoobtainaPh.D.inthescienceandengineeringprogramsatouruniversities.Inadoptingsucha"guaranteedgreencard"proposal,wewouldberecognizingtheimportantcontributionthatthesestudentsmaketoourleadingpositioninsciencebygivingequalweighttohumancapitalandfinancialcapital.
Priortothistext，theauthorhasmostprobablymadeananalysisof A．braingainintheUnitedStates.
B．thecauseofproblemsoftheblackpeople。
C．theU.Seducationalprogramsforblacks.
D．theprocedureofforeignstudents’immigration.
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