In case anyone is questioning it, celebrities are terribly concerned about the Gulf of Mexico. Actor Sean Penn has said he "cares about New Orleans." Actor Brad Pitt has spent days in the region assisting with relief efforts. And Jamie Foxx has raised more than half a million dollars to help those living in the area put their lives back together.Oh, wait: That was in 2005, in the aftermath of Hurricane Katrina — when George W. Bush was president.Back then we saw A-listers come out in droves to shout about the man in charge, draw attention to the need for assistance and help marshal resources in the relief effort.Angelina Jolie, who has often mentioned her love of New Orleans in interviews, sent letters to members of Congress and the White House. Penn visited the wreckage on a tugboat, with a shotgun (photographer in tow). John Travolta personally flew supplies to the area on his private jet, while dozens of more famous faces donated to and participated in a nationally aired telethon.