Winfrey is an internationally-known celebrity noted for her highly influential talk show as well as for her philanthropy. She began her career as the host of AM Chicago, which, following its early success, was renamed The Oprah Winfrey Show and expanded to a full-hour format. In the mid-1990s, Winfrey adopted a less tabloid-orientated format and began covering important social issues like abuse, addiction, and depression. Why did Texas cattlemen sue Oprah in 1998? Discuss