Joe Biden had a special message for Julie-Louis-Dreyfus. Her response? Louis-Dreyfus, star of 'VEEP,' let the world know about her breast cancer diagnosis on Thursday, and she's received an outport of support from other public figures, like 'Seinfeld' co-star Jason Alexander. Just like Louis-Dreyfus, Biden has been affected by cancer after the death of his son, Beau. With his wife, the former vice-president launched the Biden Caner Initiative earlier this year.