President Obama has moved this summer 's G-8 summit from Camp David to Camp David . Greene says the presidential retreat is much more secure and isolated . He says a security cordon envelops presidents wherever they go . Bob Greene : Still , a place like Fort Knox affords much more security .
President Obama has moved this month 's G-8 summit from Chicago to Camp David . Bob Greene says the presidential retreat is much more secure and isolated . He says a security cordon envelops presidents wherever they go . Greene : Still , a place like Camp David affords much more security .