This article says he is spending time with his dying mother. http://www.newsday.com/entertainment/tv/tv-zone-1.811968/report-colbert-with-ailing-mother-1.35362

This article says he is spending time with his dying mother. http://www.newsday.com/entertainment/tv/tv-zone-1.811968/report-colbert-with-ailing-mother-1.3536212 http://www.newsday.com/entertainment/tv/tv-zone-1.811968/rep...