▁ 2 0 , ▁but ▁he ▁cancel led ▁his ▁August ▁ 1 7 ▁appearance , ▁cit ing ▁a ▁change ▁of ▁" tra vel ▁plans ." ▁ ▁Dis put ed ▁accuracy ▁The ▁New ▁York ▁Times ▁noted ▁the ▁book ' s ▁assertion ▁that ▁Ob ama ▁attended ▁an ▁inc endi ary ▁ser mon ▁by ▁the ▁Rev . ▁Jer em iah ▁Wright ▁in ▁Chicago ▁on ▁a ▁date ▁when ▁Ob ama ▁was ▁in ▁fact ▁giving ▁a ▁speech ▁in ▁Florida . ▁The ▁article ▁further ▁noted ▁C ors i ' s ▁assertion ▁that ▁Ob ama ▁had ▁" y et ▁to ▁answer " ▁if ▁he ▁had ▁stopped ▁using ▁dru gs . ▁The ▁State ▁Journal - Register ▁of ▁Spring field , ▁Illinois ▁reported ▁Ob ama ' s ▁response ▁to ▁a ▁question ▁about ▁his ▁drug ▁use : ▁" I ▁haven ' t ▁done ▁anything ▁since ▁I ▁was ▁ 2 0 ▁years ▁old ." ▁C ors i ▁told ▁the ▁Times ▁that ▁" self - report ing , ▁by ▁people ▁who ▁have ▁used ▁dru gs , ▁as ▁to ▁when ▁they ▁stopped ▁is ▁inher ently ▁un re li able ." ▁( Ob ama ▁has ▁also ▁answered ▁the ▁question ▁in ▁the ▁aut obi ography ▁that ▁C ors i ▁reviews ▁in ▁his ▁book .) ▁In ▁the ▁book , ▁C ors i ▁says ▁that ▁Ob ama ▁may ▁still ▁be ▁using ▁dru gs ▁today , ▁but ▁does ▁not ▁provide ▁evidence ▁for ▁this ▁claim . ▁ ▁The ▁Times ▁further ▁noted ▁that ▁while ▁Ob ama ▁is ▁a ▁Christian , ▁the ▁book ▁contains ▁statements ▁arg uing ▁that ▁he ▁has ▁" ext ensive ▁connections