On Monday, Mayor Nutter said the city would pay for his trip to New Orleans to learn more about the oil spill.
On Tuesday, the mayor called for a do-over.
Nutter, through his spokesman Doug Oliver, said the U.S. Conference of Mayors, which organized the trip, would pick up two-thirds of the roughly $2,700 in costs. The mayor will pay the remaining $900 from his campaign fund.
Nutter traveled to Lafitte, La., with New Orleans Mayor Mitch Landrieu, and with mayors and officials from Gulf Coast states, as well as Long Beach and Santa Barbara, Calif., and Burnsville, Minn.