The Columbus trip probably cost taxpayers between $500,000 and $1 million. Air Force One alone bills out at $100,000 per hour, and the round trip is nearly two hours. Adding to the cost are military aircraft to carry limos and secret service vehicles, Marine One on standby, Secret Service, local police and other factors.http://www.cbsnews.com/8301-503544_162-20008201-503544.html
