In1790,whentheUnitedStates'capitalwasmovedtoPhiladelphia,Pennsylvania,PresidentGeorgeWashingtonbroughthisownslavechef,Hercules,fromhisVirginiaplantation,MountVernon.Buthefacedaproblem:Pennsylvanialawstipulatedthatslavesbegiventheirfreedomaftersixmonths'residency.Togetaroundthis,WashingtonsystematicallyrotatedthePresidentHouseslavesinandoutofthestatetopreventtheirestablishingasix-monthcontinuousresidency.ThisrotationwasitselfaviolationofPennsylvanialaw,butthepresident'sactionswerenotchallenged.
Washingtoncouldbeverybrutalintreatinghisslaves,andonenightHerculesescapedfromMountVernon.ThoughWashingtontriedtohavehimcaptured,hewasneverfound.Hercules'six-year-olddaugherwasreportedtohavesaid,"Iamveryglad,becauseFatherisnowfree."
一七九○年,美國首都遷到賓州費城,總統喬治.華盛頓帶着奴隸身分的主廚赫克力士前往。赫克力士來自華盛頓的維吉尼亞州佛南山農場。當時華盛頓面臨一個難題:賓州法律規定,奴隸在州內住滿六個月,就可獲自由。華盛頓為了規避這條法律,把總統府的奴隸輪流調離然後又調回賓州,以免他們有定居六個月的資格。這樣的調動,本身也觸犯賓州法律,但沒有人質疑總統所為。
華盛頓對待手下奴隸,有時十分殘暴。一天晚上,赫克力士逃出了佛南山農場。華盛頓想把他捉回去,但始終找不到他。有報道說,赫克力士六歲的女兒表示:「我很高興,因為父親現在自由了。」