The new Netflix documentary "Mucho Mucho Amor: The Legend of Walter Mercado" provides a rare glimpse into the life and world of astrologer Walter Mercado, who was a television staple for decades. "CBS This Morning" national correspondent David Begnaud spoke with co-directors and co-producers Cristina Costantini and Kareem Tabsch and fellow producer Alex Fumero about how they gained access to Mercado, what they were surprised to discover, and the personal connection they have to Mercado.