CHICAGO, ILLINOIS.- Secret Service agents attended the opening of the exhibition "Axis of Evil: The Secret History of Sin," at Columbia College in Chicago. The exhibition includes a work that depicts mock postage stamps depicting a gun pointing to the head of President George W. Bush. The exhibition includes themes such as the Roman Catholic sex abuse scandal, racism and the war in Iraq.

Secret Service spokesman Tom Mazur stated, "We need to ensure, as best we can, that this is nothing more than artwork with a political statement."

He stated that no artwork had been confiscated. A Chicago resident called the Secret Service and this started the investigation. Two federal agents took pictures of some of the works on opening night and asked for contact information for the artists.

According to Carol Ann Brown, director of the gallery, the agents were most interested in the work titled “Patriot Act” by Al Brandtner which depicts a revolver pointed at Bush's head.

Michael Hernandez de Luna, the exhibit's curator, said “It starts questioning all rights, not only my rights or the artists' rights in this room, but questioning the rights of any artist who creates -- any writer, any visual artist, any performance artist. It seems like we're being watched."