蓝色法规和蓝天法bluelaw（蓝色法规）和blueskylaw（蓝天法）原来是美国殖民时期的清教徒所订的法律，禁止在星期天跳舞、喝酒等，以后转用为有关个人行为的严格规定，如禁止公务员涉足酒家、舞厅、夜总会、或不该接受款宴等等：Abluelaw，thuscalledbecauseitwassupposedlywrittenonbluepaperwhenfirstenactedbyPuritan（清教徒）coloniesinthe17thcentury，prohibitssellingofcertaintypesofmerchandise，orretailorbusinessactivityofanykind，oncertaindaysoftheweek（usuallySunday？）。InTexas，forexample，bluelawsprohibitedsellinghousewaressuchaspots，pans，andwashingmachinesonSunday，until1985.ManysouthernstatesprohibitsellingalcoholonSunday.（Thereisnoactualevidencefortheprintingoftheselawsonbluepaper；Connecticutiswidelybelievedtohavedoneso，butthesurvivingdocumentsareonthesamepaperasotherstatelaws，andthereisnocontemporarymentionofbluepaper.Nonetheless，thenameisshortandclear，andunlikelytochange.）Likely，allbluelawstemsfromthefirstsuchstatutesetdownbytheEmperorConstantine1300yearsbeforethePuritans：Letalljudgesandallcitypeopleandalltradesmenrestuponthevenerabledayofthesun.Butletthosedwellinginthecountryfreelyandwithfulllibertyattendtothecultureoftheirfields；sinceitfrequentlyhappensthatnootherdayissofitforthesowingofgrain，ortheplantingofvines；hence，thefavorabletimeshouldnotbeallowedtopass，lesttheprovisionsofheavenbelost.“GiventheseventhofMarch，CrispusandConstantinebeingconsuls，eachforthesecondtime.A.D.321.ManyunusualfeaturesofAmericanculturesuchasthefactthatonecanbuygroceries，officesupplies，andhousewaresfromadrugstore“aretheresultofbluelaws（drugstoreswereallowedtoremainopentoaccommodateemergencymedicalneeds）。blueskylaws蓝天法指美国各州对投资公司、运营公司的债券买卖进展监视和保护投资者免遭欺诈的《公司证券欺诈防治法》之俗称。IntroductionWhiletheSEC（ScuritiesandExchangeCommission：证券买卖委员会）directly，andthroughitsoversightoftheNASD（美国证券买卖商协会）andthevariousExchanges，isthemainenforcerofthenation’ssecuritieslaws，eachindividualstatehasitsownsecuritieslawsandrules.ThesestaterulesareknownasBlueSkyLaws“。Theoriginofthetermisabitunclear，butthefirstuseofthetermthatweareawareofisinanopinionofJusticeMcKennaoftheUnitedStatesSupremeCourt，in1917.JusticeMcKennawrotetheCourt