The woman at the heart of a media firestorm following South Carolina Gov. Mark Sanford's admission of an affair can be seen in a 2001 video working as a freelance reporter for an Argentine TV station. The video, posted online by Argentine news site Infobae.com, shows Maria Belen Chapur delivering a report from New York City on the aftermath of the Sept. 11 terrorist attacks for a TV news show called "Despues de hora" on the Spanish-language America network. "Maria Belen was working as a freelance journalist for that show," Sebastian Aguirre, who worked on the show with Chapur, told...